UFC

Michael Bisping says he knows of a 16-year-old high school phenom who could destroy Floyd Mayweather AND Conor McGregor in a fight ... and they happen to share the same last name!!

We spoke to the UFC middleweight champ about the super fight ... and while Bisping says he'd be too big of a mismatch to take on Floyd or Conor ... he guarantees his son, Callum, could do the job and "beat the f**k outta the pair of 'em."

BTW -- Callum is already a stud in his own right ... having won the silver medal at the SJJIF world jiu-jitsu championships last year. He also won top sophomore on his high school wrestling team.

Bisping explains that Floyd and Conor are both amazing fighters ... but their size differences would be too much of an advantage for his offspring.

UFC lightweight Michael Johnson has a message for the UFC -- vacate Conor McGregor's belt already!!

"Who knows when he's gonna come back?" Johnson told TMZ Sports. "As I look at the division, I don't see a champion right now."

FYI -- McGregor hasn't defended his 155-pound title since winning it way back in November. Clearly, Johnson's not convinced Conor will return to the octagon after making BANK boxing Mayweather.

As for Johnson ... he's fighting an undefeated Justin Gaethje in the main event of Friday night's "The Ultimate Fighter" finale -- looking to move one step closer to Conor's gold with a W.

Gaethje's a scary dude -- seriously, go watch his highlights -- but MJ says he's shook ... and promises to wreck the UFC newcomer for talkin' smack.

Amanda Nunes once told us there was a 200% chance she'd beat Ronda Rousey.

Now, she's DOUBLING that number when it comes to beating Valentina Shevchenko at UFC 213 on Saturday.

TMZ Sports spoke with the UFC women's bantamweight champ -- who guaranteed a 2nd victory over Shevchenko in their highly anticipated rematch.

The two previously battled it out at UFC 196 back in March 2016 -- a fight Nunes won by unanimous decision. Shevchenko says she's out for revenge. Nunes has other plans.

So, what's next if Nunes wins? Hopefully, a superfight with Cris "Cyborg" Justino. We asked her about that too.

No Vegas. No wineries. Ronda Rousey tells TMZ Sports her bachelorette party is gonna be way more kick-ass -- think road trip on steroids!

The UFC legend is gearing up for her big wedding with UFC fighter Travis Browne -- so, we had to ask how they're planning on blowing off steam before the big day ... and it ain't nightclubs and rose'.

If the sight of blood makes you sick ... it's probably too late.

Here's UFC star Khabib Nurmagomedov bleeding more than he ever has in a cage ... giving up his back to the medieval practice of wet cupping (aka "Hijama").

FYI, cupping's a form of Eastern medicine that's meant to detoxify blood ... but it's rare you see a celeb messing with Hijama -- which involves making actual incisions.

It's not the most visually appealing process, but Khabib -- a practicing Muslim -- says it's the medicine of the prophet Muhammad (according to the Google translation of his Instagram caption).

Ronda Rousey says some "little punks" with a death wish broke into her home a few months ago and jacked everything from guns to Olympic rings and jewelry ... but her fiance tracked down the perps.

UFC fighter Sam Alvey is usually the one bringing the pain on the mat ... but he had the tables turned on him when he got choked out by a U.S. soldier in Iraq.

How did Nick Diaz respond Thursday after getting provisionally suspended by the UFC's drug-testing organization???

HE SMOKED WEEEEEEEEEED, SON!

Diaz fired up a fat joint with some friends in Vegas and didn't seem to have a care in the world after the U.S. Anti-Doping Agency (USADA) announced Nick accumulated 3 whereabouts failures over the last 12 months.

In other words, when USADA comes calling, you have to check in -- and Diaz didn't. Three times.

No word yet on how long the ban's gonna last ... but it's not lookin' good for Diaz -- who was suspended 18 months after a third failed drug test in 2015 (all for weed).

Diaz has 14 days to contest the violation ... if he wants to.

The last time we spoke with Dana White, he didn't seem too confident that either Diaz brother would ever fight again.

UFC rising star Robert Whittaker is hungry to fight the best, and Michael Bisping AIN'T IT -- even though he's the champ in their division.

The way Whittaker sees it, Bisping's fragile ass hasn't done much of anything since winning the middleweight belt last year ... so he and Yoel Romero are fighting to see who's really #1 at UFC 213.

"I want to fight the top of the food chain," Bobby Knuckles told TMZ Sports. "Bisping's out ... he hasn't fought a dude in the top 10 in a long time."

FYI: Bisping's only title defense was against 46-year-old Dan Henderson.

UFC badass Valentina Shevchenko is down to rumble with Ronda Rousey ... but don't get it twisted -- she's gotta put a beatdown on Amanda Nunes first.

Shevchenko told TMZ Sports the champ is getting SLEPT when they do the dance at UFC 213 ... Valentina says she's been training her ass off to avenge the L Nunes hung on her at UFC 196 -- and the new version of herself is too damn dangerous.

And once it's night-night for Amanda, Ronda can get hers -- if she wants it. Shev says that's up to her.

FYI, Rousey's kinda busy right now ... crushing obstacle courses on "Battle of the Network Stars."

Conor McGregor is gonna be PISSSSSED when he finds out how much cash Floyd Mayweather will make from their fight ... at least that's what Floyd's telling people.

One of those people is UFC champ Tyron Woodley -- who kicked it with Floyd at the Maxim 100 party in L.A. over the weekend.

In fact, Floyd made a video with Tyron calling him "the best UFC fighter" -- a compliment to Tyron and an obvious diss to McGregor.

Tyron co-hosted the "TMZ Sports" TV show (airs weeknights on FS1) and said Floyd was super cool during their hangout -- and even offered to give him some private fighting and business lessons.

Mayweather also mentioned McGregor ... telling Tyron, "Conor's gonna be pissed when he sees how much money I'm making."

UFC rising star Kevin Lee had no idea someone had pooped in the Octagon before his match with Michael Chiesa on Sunday until AFTER the fight ... and jokes, "There shoulda been a disclaimer!"

Lee (along with guest co-host Tyron Woodley) joined the guys on the "TMZ Sports" TV show and talked about Justine Kish soiling the mat in the fight before the main event.

UFC face-breaker Cyborg Justino is digging in for a fight in her battery case -- pleading not guilty to a misdemeanor charge for allegedly attacking another UFC fighter at an athlete retreat back in May.

Justino was cited for battery for allegedly punching Angela Magana in the face at the UFC center in Vegas on May 21 after she confronted Magana about comments on social media.

Video surfaced of the confrontation between the two -- and while you don't exactly see Cyborg connect with the punch, you can definitely hear it.

If convicted, Cyborg faces up to 6 months behind bars if the judge really wanted to throw the book at her. She's due back in court in August.

But she may have other problems. Magana told TMZ Sports she plans on suing the UFC star and has already met with a lawyer.

UFC fighter Felice Herrig is taking the high road in her now infamous fight with Justine Kish -- saying she refuses to "talk s**t" about her opponent ... despite what happened in the Octagon.

Herrig tells TMZ Sports she actually really likes Kish a lot and feels bad that she's blowing up in the media because of Sunday night's poo incident on live TV.

She actually calls for MMA fans to lay off Kish -- saying she's a really cool girl who doesn't deserve to be dragged through the mud.

The good news for Herrig ... she's already focused on her next fight and says she wants to avenge the only UFC loss on her record to one of the biggest stars in the sport.

A UFC fighter got the literal crap beat out of her Sunday night -- and left the proof INSIDE THE OCTAGON!!

The fighter is Justine Kish -- who was trying to wriggle her way out of a killer rear naked choke courtesy of Felice Herrig during "UFC Fight Night" in Oklahoma last night ... when her bowels betrayed her.

Kish lost the fight ... and the contents of her colon.

Michael Chiesa can't wait to shut up loudmouth Kevin Lee ... telling TMZ Sports he's gonna finish the designer label "dork" in Sunday's UFC main event.

Chiesa and Lee were the stars of a wild media event last month -- where Chiesa ran up on Lee for mentioning his mom... and got socked in the face.

MC's over the mama-drama, but told us he's PUMPED cause, "this time I get to ram my fist in his mouth and shut him up."

Chiesa knows a W moves him one step closer to Conor McGregor's lightweight belt ... AND wins his friends who bet on him a "butt-load of money" since Lee's the favorite.