Thank you everyone who participated! Tumblr's search system is infamously unreliable, so here are a few links to help you navigate the works posted for this event.
#fightereddiediazweekend2025 - this is the general tag; every work tagged with this was created for the event, any and all prompts included; you can also find these under the tag #reblog
#day 1 - the works under this tag were created for day 1 of Fighter Eddie Diaz Weekend 2025, for the prompt, "tending wounds"
#day 2 - all works under this tag were created for the day 2 prompt, "self-defence"
#day 3 - the works under this tag were created for the day 3 quote prompt, "Who did this to you?"
#day 4 - all works under this tag were created for the day 4 quote prompt, "Wanna go for the title?"
#alt: life or death - the works under this tag were created for the alternate prompt, "life or death"
AO3 Collection - not everyone who participated shared their works on Tumblr, so remember to check out our AO3 collection too!
It's been a week since the end of Fighter Eddie Diaz Week 2025, so the AO3 collection is officially closed, and the late submission period is over. Thank you everyone who participated, we couldn't have done the event without you!
fighting the memory (nothing worsens, nothing grows)
Chapters: 1/11
Fandom: 9-1-1 (TV)
Rating: Teen And Up Audiences
Warnings: No Archive Warnings Apply
Relationships: Evan "Buck" Buckley/Eddie Diaz (9-1-1 TV), Evan "Buck" Buckley & Christopher Diaz & Eddie Diaz (9-1-1 TV), Evan "Buck" Buckley & Firehouse 118 Crew & Eddie Diaz, Evan "Buck" Buckley & Maddie Buckley
Characters: Eddie Diaz (9-1-1 TV), Evan "Buck" Buckley, Christopher Diaz (9-1-1 TV), Maddie Buckley, Bobby Nash, Henrietta "Hen" Wilson, Howie "Chimney" Han
Additional Tags: Alternate Universe - Canon Divergence, 9-1-1 (TV) Season 3, Amnesia, Temporary Amnesia, Eddie Diaz's Post-Tsunami Street Fighting (9-1-1 TV), Amnesiac Evan "Buck" Buckley, Post-Lawsuit (9-1-1 TV), Protective Eddie Diaz (9-1-1 TV), Injury Recovery, Hurt Evan "Buck" Buckley, Worried Maddie Buckley, Worried Firehouse 118 Crew (9-1-1 TV), Evan "Buck" Buckley Cooks, Angry Eddie Diaz (9-1-1 TV), Angry Evan "Buck" Buckley, surprisingly not at each other, Insecure Evan "Buck" Buckley, Insecure Eddie Diaz (9-1-1 TV), Miscommunication, Evan "Buck" Buckley as Buck 1.0, Sort Of, Unreliable Narrator, Other Additional Tags to Be Added, Medical Inaccuracies
Summary:
“Doesn’t matter why not—I’m not fighting him!” Eddie snaps at the promoter.
“Hey!” Buck snaps, and he actually moves closer—close enough to shove Eddie back, and he doesn’t hold back either. Eddie knows what this is—Buck is baiting him, wants him to actually try to throw a punch.
What the fuck?
“What, you think you’re so much better than me?” Buck snaps, and—
If Eddie were an animal right now, he’d be a wolf baring his teeth. As it is, the closest to that he can get is glaring at Buck and snapping, “I’m not fucking fighting you, Buck,” and—
Buck drops his hands and his anger. The look on his face changes—turns into a confused frown, but also… something almost afraid. And that’s… not what Eddie wanted. Not that he wanted anything specific exactly, other than getting Buck to stop trying to fight him, but he didn’t want Buck to be scared either.
Eddie doesn’t understand anything until Buck asks, “How the hell do you know my name?”
Or, Buck gets into an accident during the lawsuit and forgets his memories of the last couple of years. Eddie finds out the worst possible way.
This was written for day 3 of @fightereddiediazweekend for the prompt "Who did this to you?" and the alt prompt life or death
It was also written for the Buddie AU Bingo by @buddie-bingo-events for the square Fighter Eddie
Fandom: 9-1-1 (TV)
Rating: Teen And Up Audiences
Warnings: No Archive Warnings Apply
Relationships: Evan "Buck" Buckley/Eddie Diaz (9-1-1 TV), Eddie Diaz & Original Cat Character(s), Evan "Buck" Buckley & Original Cat Character(s), Evan "Buck" Buckley & Christopher Diaz & Eddie Diaz (9-1-1 TV), Chrostopher Diaz & Original Cat Character(s)
Characters: Eddie Diaz (9-1-1 TV), Evan "Buck" Buckley, Original Cat Character(s), Christopher Diaz (9-1-1 TV), Frank (9-1-1 TV)
Additional Tags: Past Eddie Diaz/Shannon Diaz (9-1-1 TV), Mentioned Firehouse 118 Crew (9-1-1 TV), Alternate Universe - Canon Divergence, Post-Lawsuit (9-1-1 TV), Eddie Diaz's Post-Tsunami Street Fighting (9-1-1 TV), Therapy, Mental Health Issues, Dissociation, kind of?, tagging just to be safe, Depressed Eddie Diaz (9-1-1 TV), Eddie Diaz Has Panic Attacks (9-1-1 TV), Pining Eddie Diaz (9-1-1 TV), Eddie Diaz Needs a Hug (9-1-1 TV), Evan "Buck" Buckley Takes Care of Eddie Diaz, Cat Owner Evan "Buck" Buckley, Evan "Buck" Buckley/Eddie Diaz Get Together, Sharing a Bed, Wound Care, Eddie Diaz Gets Therapy (9-1-1 TV), bad therapy first then good therapy, Evan "Buck" Buckley Gets Therapy, Hurt Eddie Diaz (9-1-1 TV), just a little bit, Supportive Evan "Buck" Buckley, Not Actually Unrequited Love, Love Confessions, Unreliable Narrator, Fighter Eddie Diaz Weekend 2025 (9-1-1 TV)
Series: Part 2 of Buck's Lawsuit (a fuckton of cats)
Summary:
“I know I should be… happy, sometimes,” Eddie starts. He’s told Frank this before, but he didn’t get much of a reaction then. He’s not sure what he’s expecting Buck to say — or even do — now, but his heart pounds in his chest like he’s terrified. “When Christopher brings a new drawing from school or when Bobby makes his baked mac and cheese or when Abuela calls, but I… feel nothing.
“When our calls go wrong,” he continues before Buck can get a word in, “I know… I know I should feel something — sad or guilty or—or something. But I don’t feel anything. I don’t— I can’t feel anything.” He looks down at his bloodied hand in his best friend’s — the sight makes him nauseous — and murmurs, “I think something’s wrong with me.”
Buck doesn’t answer. He throws the second bandage away and begins to wipe down the wounds, wipe away the blood from Eddie's knuckles and scraped palms, and he moves on to his arm.
Or, Eddie tries therapy at Bobby's urging, and Buck tries therapy too, of his own free will. Only one of them is having a good time in therapy, and it's not Eddie.
This is a late submission for day 1 of @fightereddiediazweekend for the prompt: tending wounds
An Archive of Our Own, a project of the Organization for Transformative Works
'Til My Bones Collapse <- AO3
M, set during Eddie's s3 fighter arc, ch 1/4
Summary:
"You're shaking," Buck murmured, turning Eddie's hand over between his, looking for more injuries. "I guess it hurts."
Buck helps Eddie bandage his hands after a fight.
Written for Fighter Eddie Diaz Weekend 2025! @fightereddiediazweekend
"Don't make me imagine it," Eddie breathed. "Help me remember it."
Breath snagging in his throat, Buck shifted, reached for Eddie, and carefully cradled his face with one hand.
Eddie and Buck come together to begin healing.
It's finished! Day 4 of @fightereddiediazweekend!! Prompt: Wanna Go For The Title?
Fighter Eddie Diaz Weekend 2025 is over! Thanks to everyone who participated, it's been a lot of fun hosting this event.
If you weren't able to post anything this weekend, don't worry; we'll reblog late submissions until next Sunday, that is Sunday September 28 across the world, and the AO3 collection will remain open until then too (we'll keep an eye on timezones and close it after everyone's made it to Monday 29). Just make sure to mention us (@fightereddiediazweekend) and use our tag #fightereddiediazweekend2025 if you're sharing your work on Tumblr, so we don't miss it!
And if you posted something this week, but we unfortunately didn't see it (it happens sometimes), feel free to send us an ask with the link, and we'll reblog it!
Thanks again for participating, and we hope you have a good end of the year!
An Archive of Our Own, a project of the Organization for Transformative Works
'Til My Bones Collapse <- AO3
M, set during Eddie's s3 fighter arc, ch 1/4
Summary:
"You're shaking," Buck murmured, turning Eddie's hand over between his, looking for more injuries. "I guess it hurts."
Buck helps Eddie bandage his hands after a fight.
Written for Fighter Eddie Diaz Weekend 2025! @fightereddiediazweekend
Today is the last day of Fighter Eddie Diaz Weekend 2025, and we're ending this event with the prompt "Wanna go for the title?" You can, of course, also use the alternate prompts life or death and "You'll have to go through me."
As always, use these prompts in whatever way you like, have fun creating, and remember to mention us (@fightereddiediazweekend) and use our tag #fightereddiediazweekend2025 so we can see and reblog what you make!
Eddie Diaz, lightweight UFC fighter is experiencing a dry spell, in love and career. His tia has the solution to one of these problems, a blind date with a young firefighter. Things start to look up when he's called in to a last minute fight, but skill can only get him so far. What happens when the UFC no longer backs him, instead wants to use him to launch someone else's career?
Day/Prompt: Saturday, "who did this to you?"
Title inspired by the technique used in both the MMA and Firefighting (for very different purposes.)
Pairing: Evan "Buck" Buckley/Eddie Diaz
Written for Fighter Eddie Diaz Weekend!
Thanks to @fightereddiediazweekend for organizing and providing prompts. (this was very fun to research and write.)
We're on day three of Fighter Eddie Diaz Weekend 2025! Today's prompt is "Who did this to you?" but we also accept the alternate prompts life or death and "You'll have to go through me."
Use the prompts in any way you like, have fun, and remember to mention us (@fightereddiediazweekend) and use our tag #fightereddiediazweekend2025 so we can see and reblog all your creations!
An Archive of Our Own, a project of the Organization for Transformative Works
'Til My Bones Collapse <- AO3
M, set during Eddie's s3 fighter arc, ch 1/4
Summary:
"You're shaking," Buck murmured, turning Eddie's hand over between his, looking for more injuries. "I guess it hurts."
Buck helps Eddie bandage his hands after a fight.
Written for Fighter Eddie Diaz Weekend 2025! @fightereddiediazweekend
boxingtrainer!eddie. s1 buck. y'know when he looked like a twink. anyways he gets trained by eddie. and spends the entire time thirsting after him. 2298 words.
written for @fightereddiediazweekend, 09/19 prompt of 'self-defense'
Buck was a firefighter. He was supposed to be this big strong hero, but all it had taken was one man more experienced than him to render him useless. He had thought the academy would teach him everything he needed, he had thought getting strong and building his stamina would be enough to protect the people around him.
It didn't feel like it was anymore. Which is how he ended up here.
OR
Buck gets his shit rocked on a call and decides he needs to learn self-defense. Eddie is his instructor - and suddenly Buck is left feeling weak in more ways than one.
Buck knew he looked like he got his ass beat.
Probably because he did, in fact, get his ass beat.
It had happened on shift the night before. They’d been responding to a call at a bar, and while trying to defuse a situation - which didn’t even have anything to do with the call, but Buck couldn’t just ignore it - Buck himself had become the target of a man who wasn’t only bigger than him, but also had clearly had fighting experience that Buck completely lacked.
By the time his coworkers had helped him subdue the very drunk man, Buck had taken a good few blows. His lip was split, and he had a black eye and a deep purple bruise on his jaw. He had a few other bruises under his shirt. It ached, the way the blood pooled under his skin, the way the purplish-red of the already developing marks looked in the mirror in his bathroom that morning.
But more than anything, it felt like a hit to his ego.
Buck was a firefighter. He was supposed to be this big strong hero, but all it had taken was one man more experienced than him to render him useless. He had thought the academy would teach him everything he needed, he had thought getting strong and building his stamina would be enough to protect the people around him.
It didn’t feel like it was anymore. Which was how he ended up here.
Buck eyed the building in front of him, the boxing gym tucked between a clothing store and a smoothie place. He had settled on this one after an extensive Google search that included reading entirely too many reviews. People had a lot of good things to say about the trainers here - one in particular seemed to really impress reviewers.
He let out a heavy sigh and tugged the door open, walking inside.
It smelled like that mix of sweat, Lysol, and rubber that most gyms did. It was pretty empty, one person hitting a bag and two people sparring. Buck can hear a song playing that was vaguely familiar, but felt completely out of place for the setting.
“What a man, what a man, what a man / What a mighty good man (you can say it again, now)”
A man approached Buck, and he felt his mouth go dry. The man had brown hair that looked fluffy despite the sweat at his roots, a few strands falling over his forehead. He was a little more muscular than Buck, as was shown off by the black muscle tee he wore. It left Buck with a deliciously clear view of his biceps and the slight sheen of sweat on his tan skin. His brown eyes ran over Buck appraisingly, lingering on the clear bruises on his face.
“What a man, what a man, what a man / What a mighty good man (he’s a mighty, mighty good man)”
A somewhat exasperated grin suddenly split the man’s face and he turned to look over his shoulder at the woman at the desk off to the side of the entrance. “Soph, what the hell are you playing? I thought we told you to stick with the playlist James made.”
Buck was glad the man’s eyes were off of him for a moment, because he really felt thrown for a loop by how incredibly attractive he found this man in front of him.
Which was crazy. Buck liked women. A little too much probably, considering he’d almost gotten fired over some hookups. Sure, he’d stolen the ladder truck to get to said hookups, but he still secretly felt like Bobby trying to fire him was a little extreme. Admittedly, it had scared him straight, which was probably the man’s intention.
At the moment, though, Buck wasn’t feeling very straight. Scared or otherwise.
Buck suddenly realized that the man was looking at him expectantly, like he had just asked something and was waiting for an answer. Buck swallowed hard and gave the man a sheepish smile.
“Uh, sorry, what?”
“I’m assuming you’re here for a lesson?” the man repeated, looking a little amused in a way that made Buck’s cheeks warm.
“Uh, yeah, how-”
“Looks like someone did some damage,” he remarked casually, his gaze lingering on the bruises on Buck’s face again. “Are you planning revenge or something?”
Buck gave a little huff of laughter that was part amusement and part nerves. Why the hell was this man making him feel so… unsteady? “Not quite. I’m a firefighter, so I figure I should probably be better prepared in case someone gets aggressive again.”
“A firefighter, huh?” He seemed surprised, and Buck was used to that - he’d been told he looked more like a frat boy than a first responder. “Well, I’m Eddie. Lucky for you, I have the next hour free. If you wanna start now.”
There’s something like a challenge in his brown eyes, like he doesn’t expect Buck to be willing to dive right in. Buck’s gaze flickered between Eddie’s extended hand and his face. Buck gave a smile that he knew was more confident than he felt, and he reached out to give Eddie a firm handshake.
“I was hoping you’d say that. I’m Buck.”
-
Over the next several weeks, Buck went to Eddie’s gym twice a week. He incorporated the boxing lessons into his usual workout routine, and he could feel himself getting stronger. He was apparently getting better at the self-defense Eddie was teaching him, at least according to Eddie himself.
Buck wasn’t sure how, considering he could never seem to focus on anything beyond how hot he found his trainer. And when Eddie would tell him he’d done a good job? He felt like the simple praise made his brain shut off.
Clearly, this experience was educational in multiple ways, considering the things Buck had learned about himself.
They had started to get to know each other a little bit over the weeks, exchanging bits of conversation before, during, and after their lessons. They fell into an easy rapport, exchanging banter and jokes between swings while sparring. Eddie wasn’t someone who offered up pieces of himself and his past easily, but Buck had managed to gather bits and pieces - Eddie was originally from El Paso, had moved to Los Angeles several months ago. He’d served in Afghanistan as an army medic. The gym was owned by his little sister Sophia’s long-term boyfriend, and she worked at the desk. Being a boxing trainer wasn’t necessarily something Eddie planned to do forever but it paid the bills and gave him an outlet.
They had just finished a session, and Buck took a gulp of his water, then tried not to choke when Eddie took his shirt off to get some relief on his sweaty skin. Buck wasn’t sure how he hadn’t done something incredibly embarrassing yet considering the way this man made his brain short-circuit, but he was very thankful that he’d mostly been able to play it cool.
Even though the sight of Eddie flushed and sweaty and panting from exertion would definitely be haunting his dreams.
Buck was pointedly avoiding looking at the other man, so he happened to be looking towards the door when it opened, a woman and a little boy with glasses and forearm crutches walking in. The kid looked past him, his whole little face lighting up with an infectious smile before he called, “Dad!”
Eddie breezed past Buck, and Buck just barely managed to catch the smile on the other man’s face - a smile that’s impossibly soft and makes Buck feel like he’s about to melt into a puddle on the rubber floor of the boxing gym.
Because of course Eddie had a kid - the cutest kid on the planet, to top it off. And of course he’d walk over and pick up the boy with ease and a bright grin as he greeted, “Hey, Superman! You have fun with your mom?”
These words brought Buck’s attention away from the fact that the man he was hopelessly crushing on - as Hen had helped him figure out when he finally had to acknowledge that the stirring in his stomach when he saw Eddie wasn’t just excitement for his boxing lessons - was a DILF and he’d be losing his mind over it later. Especially because he wasn’t just a hot guy who happened to be a dad - Buck could tell from the brief interaction that Eddie was a good dad. The universe had it in for him, it was the only explanation.
Buck couldn’t help but glance at the woman that was clearly the boy’s mother, and presumably Eddie’s wife. Though, Buck had never seen a ring on Eddie’s finger - not that he’d looked, or anything. Eddie probably just took it off for work. Buck tried to ignore the rising tide of disappointment filling his chest and he went to step past Eddie and his family to go to the little cubbies where his stuff was.
Unexpectedly, Eddie spoke and made Buck stop short and turn towards the three.
“Buck, hey, this is my son Christopher,” Eddie introduced, having set the kid - who couldn’t have been older than seven - back down, though he kept a hand on his shoulder. “Chris, this is Buck - he’s a firefighter.”
Christopher looked at Buck, eyes wide with excitement behind his glasses. “Really? That’s so cool!”
Buck grinned right back at the kid, giving him a little wave. “It is a pretty cool job,” he acknowledged, gaze flickering to Eddie like he couldn’t help himself - because he couldn’t. The warmth he saw in those brown eyes made something in his chest ache.
Not wanting to be rude, Buck looked to the woman next and held his hand out for a handshake. “You must be Eddie’s wife,” he said. She exchanged a look with Eddie that held plain amusement, confusingly enough.
“Ex-wife,” she corrected, still looking a little amused. Even Eddie’s lips were twitching up at the corners. “I’m Shannon.”
Buck definitely should not have felt the relief he did at that information, but he knew by now that he was a lost cause.
He shook her hand, his cheeks flushed lightly in embarrassment at his assumption - though he’d blame it on sparring if he had to. “Uh, right, sorry. Nice to meet you.”
“You too,” Shannon said, her gaze running over him appraisingly before she looked at Eddie. The two seemed to have a conversation with their eyes that lasted just a second before Eddie rolled his eyes and looked away, clearing his throat.
Before anyone else could speak, Christopher was suddenly asking Buck questions about being a firefighter, and Buck indulgently answered every single one. Partially because he loved kids and had nowhere else to be, but also because it earned him a flash of that warm look again from Eddie.
Buck was so incredibly screwed.
-
It’s a few weeks later - a little over two months since the whole getting his ass beat incident - that Buck’s lessons were put to the test.
He’s not on shift this time. It does happen at a bar again, and it’s a fairly similar situation of Buck not being able to ignore something. This time, though, it’s a fairly drunk man bothering a woman that Buck saw getting more and more uncomfortable. How the hell was he supposed to just sit there? No one else was doing anything.
Buck hadn’t been expecting the guy to swing.
Beyond that first hit, though, Buck was ready and he held his own. The guy was sloppy and drunk, so Buck didn't really bother throwing punches of his own - he was just on defense and managed to keep the guy from landing any more punches until the bouncer came over and kicked him out.
Buck leaned back against the bar, his heart racing a little from the interaction. He was a little tipsy, but he felt good. Invigorated. His first thought was that he wanted to tell Eddie, like some proud student wanting their teacher’s praise. Which wasn’t far from the truth he supposed.
“Looks like someone’s been training you well.”
Buck turned so quickly it almost made him dizzy, eyes wide with shock. He genuinely wondered for a moment if he had somehow summoned Eddie with the power of thought.
Eddie was grinning at him in the way that made his knees weak, sat at a bar stool that Buck swore was empty a few minutes ago.
Buck grinned at him in return, desperately ignoring the butterflies in his stomach.
“Eh, he’s alright,” he said, tone lightly teasing as he took a sip of his beer.
He almost choked as Eddie suddenly leaned closer, a hand extended. He swallowed thickly as Eddie’s thumb swiped over his cheek, the slight sting letting Buck know that the man’s first punch had broken skin - probably because of the ring he was wearing.
“You’re bleeding a little,” Eddie said casually, like the proximity and touch were nothing. A touch that Buck had been craving for weeks, a touch that was more gentle than he had expected. A touch that felt like it awakened a hunger Buck didn’t know existed.
“Uh, it’s- Ye-yeah um it’s fine,” Buck managed, knowing his cheeks were flushed and he probably looked like an idiot.
But Eddie just looked amused - not in a mean way. There was something soft in it.
Maybe it was that look that gave Buck the courage, though he was sure him being a little tipsy still had something to do with it. Either way, the words tumbled out of his mouth before he could think better of it.
“Can I buy you a drink?”
Eddie’s face split into a smile that made Buck feel warm all over. “Thought you’d never ask.”
Today is the second day of Fighter Eddie Diaz Weekend 2025, and the prompt is: self-defence. We also have the alternate prompts life or death and "You'll have to go through me," if those speak to you more!
The prompts are yours to interpret in any way you'd like, just make sure to mention us (@fightereddiediazweekend) and use our tag #fightereddiediazweekend2025 when you post, so we can see and reblog all your creations!
An Archive of Our Own, a project of the Organization for Transformative Works
'Til My Bones Collapse <- AO3
M, set during Eddie's s3 fighter arc, ch 1/4
Summary:
"You're shaking," Buck murmured, turning Eddie's hand over between his, looking for more injuries. "I guess it hurts."
Buck helps Eddie bandage his hands after a fight.
Written for Fighter Eddie Diaz Weekend 2025! @fightereddiediazweekend
His eyes widened as he spied the body of a fully grown man; his clothes were dark in color and were covered in dirt and - Buck looked closer - was that blood? He leaned further in, removing pizza boxes from where he hoped the head would be and gasped.
Buck works at the very busy Metro-General as an ER nurse, but sometimes the patients can be found outside the hospital.
Written for Fighter Eddie Diaz Weekend 2025 - Day One: Tending Wounds @fightereddiediazweekend
Buddie Month August 2025 - Week One: 'Do you trust me?' @buddie-month
Buddie AU Bingo Square - Based on other show/movie/book @buddie-bingo-events
