UFC

WWE superstar Baron Corbin hasn't forgotten all of the trash Conor McGregor talked about wrestlers ... and says he wants a shot at the UFC star in the hopes of teaching him a very violent lesson.

Corbin -- who's wrestling for the WWE intercontinental belt at WrestleMania 33 this weekend -- appeared on 105.3 The Fan in Dallas when he was asked about Conor vs. Floyd.

After siding with Mayweather, Corbin brought up the comments McGregor made back in August ... when he said most WWE guys are "messed up p**sies" who couldn't hold their own in a real fight.

Corbin -- a former boxer and NFL lineman  --- clearly took the comments personally, saying, "I would like to slam him on his head a few times."

Vince, Dana ... thoughts?

The Floyd Mayweather vs. Conor McGregor superfight WILL happen ... as soon as Conor makes it happen, this according to one of Floyd's closest "friends" (who he used to bang).

TMZ Sports talked to Bad Medina, the woman who Floyd began dating right after his relationship with Ms. Jackson (remember her?) ended a couple years ago.

Medina says she and Floyd are more like close friends now, but claims she's heard him talk about the fight with Conor, and insists Floyd's all in, once McGregor actually gets serious.

Nick Diaz just got verbally SMACKED by an ex-boxing champ who says Diaz is nothing more than a coward from a redneck city (sorry, Stockton) who's afraid to fight a real pugilist.

The boxing great is Jean Pascal, former WBC, IBO, and The Ring magazine light heavyweight champ, who says he's sick of UFC guys claiming they can hang with REAL boxers.

Pascal ALSO says he's got a real problem with the way Nick trashed his buddy, GSP, before they fought back in 2013 and thinks Nick needs to be taught a lesson in humility.

You gotta check out the video ... the guy GOES OFF. Question now is, will Diaz respond?

Arianny Celeste is vacationing in Mexico ... and it looks like tops are optional at her beach of choice.

The UFC Octagon Girl and model let her girls free while enjoying the sunshine in Tulum ... and one of her friends even joined her.

And yes ... the buns were also out.

BIG WIN for Conor McGregor ... the UFC star got his big $75,000 fine reduced to $25,000 for that water bottle fight with Nate Diaz at the UFC 202 presser.

Remember, the Nevada State Athletic Commission hit McGregor with the massive fine -- plus 50 hours of community service. Conor was PISSED!!! So was Dana White.

But the Commission granted McGregor a rehearing which took place moments ago ... and agreed to REDUCE the punishment to a $25k fine plus 25 hours of community service, per Damon Martin of FOX Sports. He has 6 months to complete the community service.

Dana White ain't exactly saying "never" when it comes to Greg Hardy possibly fighting in the UFC ... but the ex-NFL star has to prove himself in some "serious fights" before he gets a look.

Hardy -- who was a beast in the NFL -- has transitioned into MMA and vows to be a real deal fighter ... with hopes of one day competing in the Octagon.

White warns that athletes who come from other sports often get WRECKED when they try to fight ... since most successful MMA fighters have been training for combat since they were kids.

Conor McGregor must be high as a kite if he thinks he deserves equal pay to fight Floyd Mayweather ... so says "Love & Hip Hop: Hollywood" star Jason Lee ... an unofficial member of The Money Team.

We got Jason Saturday at Toast in L.A., and he made it clear Floyd's ready to fight ... but that Conor's holding things up over ridiculous money demands.

Jason also has a dismal outlook on the future of boxing.

Ronda Rousey had a blast shooting her episode on "Blindspot"and wants to continue her role on the show into next season ... this according to Ronda and Dana White.

We spoke (briefly) with the UFC legend -- who shot her scenes for the NBC show 2 weeks ago -- and she tells us, "Blindspot was awesome. I really loved it. I hope I get to go back."

Pierce Brosnan is ALL ABOUT the Fighting Irish on St. Paddy's Day ... telling TMZ Sports his fellow countryman, Conor McGregor, will DESTROY Floyd Mayweather if they actually square up.

Dana White says Conor vs. Floyd is still a real possibility -- telling TMZ Sports, "It doesn't make a lot of sense for my business, but I would never keep Conor from making that kind of money."

The UFC boss was out in Bev Hills when he laid out Conor's opportunities ... some real big fights. He also said Conor's waiting for his kid to be born before he fights again.

Willie Nelson can take BOTH Diaz brothers at the same time ... at least when it comes to smoking weed.

The country music legend (and pot icon) was proudly displaying his new boxes of the new Nick and Nate Diaz line of marijuana cigarettes.

The company behind the pot products say "Nate's Energy" weed is a pre-workout blend and "Nick's Recovery" is to help athletes post-training.

Or, if you're Willie Nelson ... pre-show, post-show?

Floyd Mayweather had made it loud and clear -- he's willing to step out of retirement to fight Conor McGregor ... if they can just hammer out a deal.

Floyd made the official announcement Saturday, saying "for Conor McGregor, I'm coming out of retirement ... just to fight Conor McGregor."

He added ... "I don't want to hear no more excuses about the money, about the UFC. Sign the paper with the UFC so you can fight me in June. Simple and plain. Let's fight in June. You're the B side, I'm the A side."

Here's the problem ... Dana White has already said the fight isn't likely to happen because negotiations are falling apart. They seem to be worlds apart on money ... and there's simply no deal as of February.

Floyd's been back and forth about being willing to fight Conor, but seems to be taking a firm position now ... he's willing if a deal can be struck.

Your move, Dana.

This is great ... some Faizon Love Post-Airport Fight Analysis ... with a real UFC star.

We spoke with Roy "Big Country" Nelson about the throwdown in Ohio -- and he told us the heavyweight actor showed real fighting skills ... almost like he's done it before.

But, what woulda happened if Love picked on someone his own size?

Nelson has some thoughts.

If you thought there wasn't a man alive crazy enough to call out former 2-time UFC heavyweight champ Cain Velasquez, you're wrong ... 'cause TMZ Sports found the MMA badass willing to do it.

We got Francis Ngannou -- the #6 ranked heavyweight in the UFC -- out in NYC, and we asked the 6'4" 260 pounder who he wanted to fight next time he steps in the Octagon ... his answer was simple.

"My next opponent I want is Cain Velasquez."

Cain's last fight was this past summer when he beat down Travis Browne (like everyone does) and Francis TKOd Andrei Arlovski back in January for his 9th straight win.

Casper Smart says there's a reason he's putting in work on the MMA mat ... and it's not to beat up J Lo's next boyfriend ... telling TMZ Sports he wants to be an action movie star!

We got Casper out in Vegas and talked to him about his MMA training, which he's taken quite seriously since he starred in the combat themed movie "Street" a couple years ago.

Smart says anyone who thinks he's doing all this work for a shot at the UFC is super WRONG ... telling our guy he's getting his rounds in so he can be the next big action star.

BTW -- we also ask Smart who he thinks would win in a fight between him and Drake, Lopez's last (rumored) flame.