MMA

Conor McGregor has a message for Floyd Mayweather -- if you wanna talk smack, "SAY IT TO MY FACE!"

We just shot the UFC superstar on the streets of NYC -- where he's still getting all sorts of love from fans -- and told him about the comments Mayweather made about him Monday.

McGregor called full B.S. on Floyd's claim that he didn't watch UFC 205 -- and then Conor straight-up called him out.

Floyd Mayweather is sick of the Conor McGregor comparisons -- saying it's "total disrespect" because the UFC star is an ant and Floyd is an elephant.

Seriously.

Ronda Rousey made an angry charge onto the UFC stage to stare down her UFC 207 opponent Amanda Nunes ... and then stormed right off ... blowing off the customary interview with Joe Rogan.

Dana White tried to hold Ronda onstage so Rogan could get off some questions -- but Rousey was having none of it ... and pulled away to bolt.

Nunes stayed onstage and vowed to beat Rousey's ass when they get in the Octagon in December.

By the way, Ronda's hair looked dope.

UPDATE -- Ronda continued to storm past media after she left the stage.

Conor McGregor and Eddie Alvarez just went toe-to-toe for EVEN MORE smack talking at the UFC 205 weigh-ins ... jawing at each other while Dana White pulled them apart.

Conor took more shots at Eddie -- claiming the fight will be just another day at the office ... "I do this every week."

Eddie vowed to silence the crowd ... and promised to shut Conor up for good.

An NYPD cop was literally SHAKING IN HER BOOTS when she came face-to-face with Conor McGregor this week -- but she wasn't scared ... she was insanely starstruck!

The UFC superstar is in New York gearing up for UFC 205 on Nov. 12th -- and came face-to-face with an officer who told Conor she was Irish ... and he was her hero.

What ensued was some serious fangirling ... with the cop claiming, "Besides my kids being born this is one of the best days of my life."

Ronda Rousey just got verbally annihilated by a female fighting goddess -- ex-boxing champ Christy Martin who ripped Ronda for being a bad role model, a bad champion and an idiot.

48-year-old Martin -- one of the greatest female boxers of all time -- went off on Rousey to FightHype.com ... saying she wishes she was 10 years younger so she could teach the UFC superstar a lesson.

Check out why Christy thinks Ronda will never set foot in the Octagon again ... despite having a scheduled fight in December.

Greg Hardy has been training his ass off as an MMA fighter -- linking up with one of the top gyms in the country where he's been living and sleeping while working under the tutelage of an ex-UFCer.

TMZ Sports has learned ... the 28-year-old ex-NFL star has been training with American Top Team in Florida -- which Dana White once hailed as one of the top 5 MMA teams in the country.

We spoke with one of Hardy's trainers, Mike Brown -- a former UFC fighter who actually fought and BEAT Urijah Faber TWICE in his MMA career.

Brown says Hardy has been living at the training facility -- "He's staying in the dorms we have upstairs. It's for guys who are really in intensive training."

While at ATT, Hardy has been working out with legit MMA studs like King Mo -- who seems to have taken a liking to the ex-Pro Bowler.

So, how does Hardy look?

"He seems to have the drive and desire," Brown says ... noting that Hardy has been taking classes in multiple disciplines to hone his skills.

"He took boxing last night, jiu-jitsu today. He was training with Steve Mocco, our wrestling coach, who was in the Olympics."

As far as taking a pro fight, Brown says there's a shot he could debut in 2017 taking a low-level pro fight or an amateur fight. Stay tuned ...

He's been a bodybuilding champion, a movie star, and the governor of California ... but Chael Sonnen still thinks Arnold Schwarzenegger missed his calling ... as a dominant MMA fighter.

We got Chael out in L.A. and asked how he thought Arnold would do in MMA ... being that CS had just told us he's expecting his 'Celebrity Apprentice' boss to be at his big fight in Inglewood next year.

Check out the clip -- it's clear Chael LOVES him some Arnold ... saying that the guy's never failed at anything ... and he thinks that would carry over into the combat arena.

Brooke Hogan says she's recruiting the BEST female athletes in the world to join her new female pro wrestling league -- and she's got her sights set on Ronda Rousey.

UFC superstar Michael Bisping has a message for Georges St-Pierre -- I'LL FIGHT YOU WITH ONE ARM!!!!

The middleweight champ was out in Burbank on Friday when he told us what really went down behind the scenes with GSP -- and why the two couldn't get a deal done for UFC 206 in Toronto.

But Bisping's past that now -- he wants a piece of Nick Diaz ... claiming the fight would be PERFECT for 206 and they could both make a ton of money in the process.

Nick ... thoughts????

Olympic judo superstar Kayla Harrison says Ronda Rousey has given her "a lot of help" when it comes to making the transition into MMA -- but the real question ... would she ever take a fight against her old friend?

TMZ Sports spoke with 26-year-old Harrison -- a 2-time Olympic gold medalist in judo -- who says she trained with Rousey every day for 7 years as they fought their way to the top of the sport.

Now, with Harrison signing a contract with the World Series of Fighting -- she says she'll reflect on the advice she got from her old friend as she begins her training.

UFC star Anthony Pettis says he's "shocked" and "confused" over the fire attack at his home in Milwaukee -- claiming he has "no idea" why anyone would want to harm him.

As we previously reported, someone went to Pettis' home in the middle of the night and set his cars on fire. Cops are on the hunt, but have not made any arrests.

Now, Pettis' rep, Lindsey Deierling of EAG Sports Management, tells TMZ Sports, "Anthony has no idea who could be responsible for this incident or why someone would damage his property in such a way."

"He is shocked and confused as to who would randomly commit such a hateful crime like this to his family."

"He has no ongoing issues with anyone in his community, and he is very well known in Milwaukee for the work and dedication he has put in to helping his city and creating jobs and resources for the local citizens."

"Anthony is disappointed that this person(s) would compromise the safety of his family and destroy his personal property."

WAS TITO ORTIZ'S ROLLS-ROYCE REALLY REPOSSESSED???

Depends who you ask.

Chael Sonnen insists it was ... and he claims to have rock solid proof.

Tito Ortiz says it's a total lie -- and he's willing to give Chael a lift to the hospital in it after he beats his face in at Bellator 170.

Watch both videos. You decide who's really telling the truth.

She destroyed everyone at the Olympics -- in 2012 AND 2016 -- and now 2-time judo gold medalist Kayla Harrison has announced she's making the jump to MMA.

The 26-year-old just signed a deal with World Series of Fighting (WSOF) to not only fight ... but also be a part of the announcing team.

There are already comparisons being made to Ronda Rousey -- not just because Ronda was an Olympic medalist in judo -- but because the two used to train together.

So, how's she been preparing?

"I’ve been boxing and doing jiu-jitsu and all that, and the biggest thing for me, really, is that I miss competing,” Harrison told USA Today (via MMA Junkie).

"I miss fighting on the highest stages of the world, and the World Series of Fighting really gave me a great opportunity."

No word on when she'll make her fighting debut.

Don't put him out to pasture just yet ... UFC stud Urijah Faber says he's not 100% sure his next fight is his last -- telling TMZ Sports he's consider coming back if someone really pissed him off.

The California Kid is slated to take on Brad Pickett at UFC Fight Night in December -- and had said it would be his last fight ever ... culminating a solid 13 year career.

But when we pressed ... Faber told us he's definitely not slamming the door on the possibility of getting in the Octagon again.

"I'd never put extreme limits on myself. I would never say, 'this is it, this is it.' I mean, somebody might really piss me off and there might be a golden opportunity. You never know."

"But my mentality right now is I'm gonna have this fight. I'm gonna go out with a bang and make it a meaningful and heartfelt one."

Bobby Lashley wants a piece of Brock Lesnar -- not as a pro wrestler -- he wants a REAL DEAL MMA FIGHT ... and tells TMZ Sports it's a fight he knows he can win.

Lashley got famous as a pro wrestler ... racking up titles in WWE and TNA -- but now he's killing it in MMA, with a 5-0 record in Bellator's heavyweight division.

The 40-year-old brawler says he knows the biggest fight of his life would be against Brock -- and now he wants to make it happen.

Lesnar has hinted that he ain't done fighting yet ... so ... superfight???