UFC

UFC champ Conor McGregor called Nate Diaz a "cholo gangsta from the hood" in one of the most hate-fueled pre-fight press conferences ever.

Nate said everyone in the UFC -- including Conor -- was on steroids. Conor went nuts and said he was absolutely not.

Nate, who's stepping in at the last minute to replace the injured Rafael dos Anjos in UFC 196 on March 5th, was goaded by Conor, who said Nate "makes gun signs with the right hand and animal balloons with the left hand."

Conor was referring to Nate's side jobs to make money. Conor was quick to add he's now a millionaire who shops on Rodeo Drive.

You have never seen this kind of hatred.

With Rafael dos Anjos pulling out of his big fight with Conor McGregor at UFC 196 -- Donald "Cowboy" Cerrone is throwing his Stetson in the ring to take Raf's place.

RDA suffered a broken foot during a training session -- leaving the UFC scrambling to find a suitable replacement for Conor for the March 5th fight ... one of the biggest UFC events of the year.

Now, Cerrone says he's game ... with Cowboy's manager Josh Jones telling FOX Sports they've already reached out to the UFC saying he's down to fight.

So far, no official decision has been made -- but it's gotta happen fast ... so stay tuned.

He was awesome as Ray ... he crushed it as Django ... and apparently Jamie Foxx also brought down the house playing RONDA ROUSEY!

It's a pretty cool story ... UFC champ Holly Holm says Foxx invited her over to his L.A. pad after she won the fight back in August -- and treated her to a live reenactment of the K.O. seen 'round the world.

So, how'd Foxx do?

HOLM LOVED IT!

Jon Jones caught a HUGE break during his traffic stop in New Mexico last month -- with the officer telling the UFC star he let him off easy after going 75 in a 35 WITHOUT a driver's license.

TMZ Sports obtained the audio from the January 31st incident -- in which Jon is extremely polite and explains that he didn't realize he was going so fast.

The cop asks for Jon's driver's license, registration and proof of insurance but Jones says he doesn't have it on him ... explaining he was running late for MMA practice and didn't have his stuff in order.

Jon then says he lost his license a while back and has been driving with his passport instead -- the cop explains he can't do that.

In the end, the cop tells Jon he could have busted him for reckless driving -- a misdemeanor -- which could have violated the terms of Jon's probation stemming from his hit and run conviction.

Instead, the cop only cited Jon for driving without a license, proof of insurance and registration -- and explains, "You're getting a huge break dude."

At the end of the stop, the cop admonishes Jones -- "Just drive normal, okay? I mean, yeah you got a cool car but there's no need to go drive crazy and kill somebody or kill yourself. It ain't worth it dude."

Ronda Rousey's boyfriend Travis Browne says he vowed to support Ronda "in any way I could" after her devastating loss to Holly Holm -- saying he would "go through hell and back for her."

Earlier this week, Ronda admitted that she thought about killing herself after the fight -- and Browne helped her get out of that dark place.

"I was there to support her in any way I could, just like any man would do for his woman,” Browne told Activ8Media.

"It’s pretty simple. There’s no magic in it. We go through those dark times and we need someone to lean on. I hate the fact that she had to go through that dark time, but like she said, it happened for a reason and there’s a great purpose."

"This is our story and this is our life, and I would go through hell and back for her."

An emotional Ronda Rousey broke down in tears and told Ellen DeGeneres she was so crushed after her loss to Holly Holm back in November, she thought about taking her own life.

Ronda Rousey suddenly has more people wanting to train her than Anakin Skywalker ... first Chuck Liddell, and now boxer Andre Berto has offered his help to aid Ronda in bashing Holly Holm's face.

TMZ Sports spoke to Berto and he told us he agrees with Ronda's mom ... who blamed Ronda's current trainer for not having Rousey ready to throw hands with Holm. But Berto thinks he can change all that.

"Ronda isn't a pure boxer, Holly is. She needs to focus more on her boxing and cutting off the ring. I'd love to stop by her gym and give some pointers.”

It's obvious Ronda is on the comeback trail -- we saw her knocking the ring rust off with her trainer recently -- although it's unknown exactly when she'll make her return.

Andre can help Ronda no matter the opponent ... pointing out that his father and brother have both fought MMA so he knows his way around the octagon.

Talk about hitting below the belt ...

UFC superstar Michael Bisping is ripping into Anderson Silva -- claiming the guy's history of PED usage left him with a wonky penis ... and Bisping's not afraid to mock him for it.

The two are set to face off at UFC Fight Night in England on Feb. 27th -- and even though Bisping says he believes Silva is clean for this fight, he thinks Silva had been cheating for years.

"He was using his entire career," Bisping says.

Check out the clip ... Bisping also predicts exactly when and how he plans to beat Silva.

11:58 AM PT -- We just got Mayhem's mug shot. Yeeesh.

Ex-UFC star Jason "Mayhem" Miller was arrested for DUI this weekend -- and we're told officers brought the cavalry to the arrest scene, just in case he decided to get violent with cops again.

FYI -- Mayhem allegedly fought police on TWO separate incidents last year ... grappling with 4 cops in March and attacking officers with a ceramic tile back in October.

So, when cops got a tip that 35-year-old Miller was driving drunk in Irvine, CA this weekend -- we're told they rolled deep just in case things got crazy this time around too!

Our sources say there were roughly 15 cops on scene and a K9 unit to provide assistance.

When the gang arrived to the scene, we're told Miller had "obvious signs of intoxication" -- and then bombed several field sobriety tests.

He was arrested on suspicion of DUI and hauled to a nearby jail.

We're told Miller was mouthy with cops during the incident ... but didn't get violent this time -- which is a step in the right direction considering his past.

The Ronda Rousey comeback is officially in full swing -- 'cause the UFC superstar is finally back in the gym fighting again ... and we've got the pics!

It's the first time we've seen Ronda throwing punches and grappling since her crushing loss to Holly Holm back in November ... a sign her injuries are all healed up and she's ready to go.

Directly after the Holm fight, Rousey said her mouth and teeth suffered so much damage that she speculated, "It might be 3 to 6 months before I can eat an apple, let alone take an impact."

Well, here we are 3 months later ... and Rousey was back at the Glendale Fighting Club working out with her trainer Edmond Tarverdyan.

Ronda has previously told us she plans to fight Holly sometime this year -- though no date has been set.

Good news for Ronda Rousey's mom ... UFC legend Chuck Liddell is totally willing to take over for the trainer she hates ... saying he'd love to be in Rowdy Ronda's corner for her rematch with Holly Holm.

We got Liddell out in San Fran partying for Super Bowl 50 and asked about Ronda's mom blasting trainer Edmond Tarverdyan ... basically blaming him for Rousey getting waxed.

THIS HAS GOTTA HURT!!!

UFC superstar Chris Weidman is now playing the role of enforcer -- delivering a BRUTAL leg kick to a non-fighting Reebok exec ... all because the company man lost a bet.

The guy with the battered left thigh is Reebok senior sports marketing manager, Kevin Brochu -- who recently made a bet with famous MMA reporter Ariel Helwani. Loser had to take a Weidman leg strike.

Ronda Rousey hasn't lost her mojo -- she just had a bad night -- so says UFC honcho Dana White who tells TMZ Sports he's convinced she'll bounce back to her usual ass kicking form.

White was out in NYC when we hit him with a flurry of UFC questions in a street speed round -- and he answered all of 'em.

1) How's Chael Sonnen gonna do on 'Celeb Apprentice'?

2) When is CM Punk gonna fight? Who's he gonna fight? Is he ready?

3) Will Joe Rogan ever fight in the UFC?

4) Are you worried about Conor McGregor's insane spending habits???

The champ is here ... and he's ready to party!!!

Hours after Danny "Swift" Garcia beat Robert Guerrero to clinch the welterweight world title on Saturday, the boxing star hit Playhouse nightclub feelin' no pain!

Danny wore some shades to cover the bruising -- but the guy was in a great mood ... ready to turn all the way up with his entire entourage.

We also asked if he was ready to fight Amir Khan or Floyd Mayweather (who was ringside at the fight) ... Garcia had a message to both of 'em -- BRING IT ON!

Miesha Tate still hates Ronda Rousey -- telling TMZ Sports there's no way she'll be watching the UFC star host 'SNL' this weekend ... and doesn't ever see the two becoming friends.

In fact, when asked if they would ever be able to patch things up -- Tate told us, "Hell no. Definitely not."

On the flip side, Tate says she LOOOVES Holly Holm -- the woman she's set to fight at UFC 197 ... and says the two have already agreed to get beers after the fight.

Conor McGregor is still FUMING at Floyd Mayweather for dragging him into a conversation about racism -- saying, "There's people buried in the desert for less than that."

Of course, Mayweather made headlines earlier this month for using McGregor to make a point about racism in combat sports.

"They say [McGregor] talks a lot of trash and people praise him for it, but when I did it, they say I'm cocky and arrogant ... so biased! Like I said before, all I'm saying is this, I ain't racist at all, but I'm telling you racism still exists."