UFC

Dana White tells TMZ Sports it's pretty obvious what happened to Ronda Rousey -- "One day you show up and you don't have it anymore."

The UFC honcho appeared on the "TMZ Sports" TV show (airs Tuesday night on FS1) and said Ronda's career has gone the way of MOST great professional athletes.

"It's no different than any other sport. When you're a professional athlete and you're competing at a certain level, the day comes when you don't anymore. It happened to Ronda."

White says, even though he thinks Ronda is turning the page on her fighting career, she'll always be connected with the UFC.

Floyd Mayweather or Manny Pacquiao?

Tito Ortiz says it doesn't matter ... 'cause Conor McGregor would get his ass kicked by either guy in a boxing match.

The Huntington Beach Bad Boy was at ArcLight Hollywood for the "John Wick: Chapter 2" premiere when he told us straight-up ... MMA fighters don't stand a chance against boxers in a BOXING MATCH!

It's likely over for Ronda Rousey ... so says UFC honcho Dana White who says when it comes to fighting, "I think she's probably done."

White appeared on the "UFC Unfiltered" podcast and was asked straight-up about the chances of Ronda getting back in the Octagon after she got destroyed by Amanda Nunes at UFC 207.

"In the conversation I had with her, if I had to say right here right now -- again I don't like saying right here right now because it's up to her -- but I wouldn't say she fights again," White said.

"I think she's probably done ... She's going to ride off into the sunset and start living her life outside of fighting."

Ronda's been busy since the fight ... protesting the Dakota Access Pipeline and working on getting her concealed weapons license in Nevada.

If she is done fighting forever ... salute to Ronda. She's a legend.

If Conor McGregor wants Pacquiao ... Manny's promoter says it's as good as done!!!

Here's the deal ... Conor raised the idea of fighting PacMan during his Pay-Per-View Q&A session over the weekend while being pressed on the possibility of fighting Floyd Mayweather.

"Maybe f*ck Floyd," McGregor said ... "Maybe f*ck the A-side. Maybe I’ll just fight Pacquiao instead. Why not do that? Why not fight Manny and f*ck Floyd?”

So, we spoke with Manny's longtime promoter, Bob Arum, who said he'll do WHATEVER IT TAKES to make that fight happen.

Mostly because it's easy money ... with Arum saying Manny would KO Conor without even breaking a sweat.

Ronda Rousey is not a complete fighter -- and will never be able to keep up with the new crop of women competing in the UFC ... so says Daniel Cormier.

The lightweight champ says he really likes Ronda, but had to keep it real when talking about her fight career -- explaining why her days of pure domination are over.

Cormier also has a message for his UFC 210 opponent, Rumble Johnson -- saying he plans to STAND UP BOX the brawler when they face off in the Octagon on April 8.

And after that ... Cormier says he needs to fulfill his destiny and finally get that rematch with Jon Jones.

Floyd Mayweather says he's all about giving fans what they want ... and they want him in the ring with Conor McGregor.

Floyd added fuel to the fire Saturday night as he yakked with Showtime's Jim Gray, after Conor said his sights are set on fighting the boxing champ.

Floyd hedges for sure, but keeps coming back to the central point ... he's more than open to the fight.

Daniel Cormier is definitely NOT ashamed of the comments he made about Gina Carano -- in fact, he's glad she's upset ... telling TMZ Sports, "Maybe I'll piss her off enough that she'll fight again!"

The backstory ... Carano was a stud MMA fighter who left the cage for a Hollywood career after losing her last fight to Cris "Cyborg" Justino in 2009.

Carano recently offered up some career advice to Ronda Rousey -- telling her to consider Hollywood so she can "express herself as an artist."

Cormier didn't like that and ripped her on TV ... trashing Carano's acting career and saying she made bad career choices.

Carano fired back saying D.C. should be "ashamed" of his attack.

We spoke with Cormier who's definitely NOT backing down -- in fact, he told TMZ Sports he thinks Gina left fighting because she was damaged by Cyborg ... and should've continued to fight.

Cormier admits Gina has a decent acting career -- but says it would have been WAY bigger if she would have continued kicking ass in the cage.

How will you spend your Friday? Conor McGregor spent his in a jewelry store in Ireland buying ROLEXES for his sisters!

The UFC superstar hit up Weir & Sons in Dublin along with his sisters, Aoife and Erin ... and showered them in fancy timepieces ... just because he felt like it.

Conor McGregor hooked up with badass gold medal winning wrestler Helen Maroulis in Ireland ... and spent hours training with the Olympian.

Maroulis -- the first American female wrestler to take gold in the Olympics -- posted a picture with Conor on Instagram ... leading people to wonder why the wrestler and fighter were together.

Helen gave us the answer ... it was all about working up a lather!

"It was awesome. We rolled around for a good while. Play wrestling, sparring," Maroulis told TMZ Sports. "He kinda showed me the differences when you're wrestling against the cage which is obviously very different than regular wrestling."

Helen says the lessons from Conor didn't end on the mats ... he also schooled her on handling the media.

As for when we'll see her fight, Helen insists she still hasn't made up her mind on the move to MMA ... but all signs seems to be pointing to a foray into the combat sport.

UFC star Khabib Nurmagomedov says he's the Floyd Mayweather of MMA -- and if the boxer wants a REAL fight ... he'll happily meet him in the street!!!

TMZ Sports spoke with the 28-year-old Russian who says he's ready to BREAK Tony Ferguson when they face off at UFC 209 in March ... and then he'll smash Conor McGregor.

In fact, Khabib warned Conor and Floyd Mayweather that he's a force to be reckoned with ... and if either one gets in his way, he'll destroy them.

He eats sleeps and breathes MMA -- and refuses to even THINK about any other sport.

Ronda Rousey told the anti-Dakota Access Pipeline activists at Standing Rock that she WOULD return to the front lines of the protest and "get pepper sprayed alongside everyone else."

We spoke with Linda Black Elk -- one of the leaders of the activist group -- who praised Ronda for visiting the protest camps in North Dakota last week and delivering much needed food and supplies.

"She's an incredible person and just so humble," Black Elk said ... noting Ronda's visit was an incredible "moral booster" to the people fighting against the 1,000 mile oil pipeline.

Black Elk says Ronda mentioned that she "still felt like a disappointment" after her loss to Amanda Nunes at UFC 207 and that "everyone was upset with her."

Linda says she told Rousey that she's just the opposite -- "It was very important for me to let her know just how important she is for the Native community in particular."

No word on when Rousey plans to return -- but it's clear she'll be welcomed back with open arms.

Ronda Rousey got political last week -- with a secret run to the Standing Rock Indian Reservation to help protesters fighting against the Dakota Access Pipeline project.

The UFC star teamed up with fellow Olympic judo athlete Pauline Macias and went to the protest site in North Dakota to deliver supplies.

We're told Ronda's group brought fresh fruit, veggies, bread, tents and wood-burning stoves. One source says Ronda didn't want recognition and tried to stay under the radar.

By the way, Ronda was SMILING again -- which is great because we haven't seen a lot of that lately.

As for the protest, the Standing Rock Sioux tribe has led the charge against the 1,000 mile oil pipeline claiming a possible spill could damage important Native American cultural sites and pollute drinking water.

Pauline Instagrammed about the experience with Rousey saying, "I had one of the best road trips of my life with @rondarousey to deliver supplies to the protesters at Standing Rock!"

"This was such an incredible experience, & I can't thank my friend enough for allowing me to be a part of it! #NODAPL #StandWithStandingRock"

Ronda Rousey has come out of hiding with a bang -- surfacing at a Las Vegas gun store where she applied for a concealed carry permit ... TMZ Sports has learned.

The UFC superstar and her boyfriend, Travis Browne, hit up The Range 702 gun store on Sunday where our gun enthusiast witnesses at the store say Ronda took a special course required to get a concealed carry permit.

Once Ronda applies for the permit, it usually takes around 90 days before she'll get her card in the mail.

We're told Ronda did some shooting at the range -- which is also required for the test -- using a blue Glock 43 9mm pistol.

It's the first time we've seen Ronda out in public since her big loss to Amanda Nunes at UFC 207.

You fancy, huh?

Nick and Nate Diaz took their weed game to a whole new level Thursday night when they blazed up a custom $2,000 gold joint ... in the shape of UFC fight gloves.

The guys were hanging at the California Herbal Remedies pot shop in L.A. when they were presented with the special bud.

Of course, they smoked the hell out of it ... 'cause that's how they do.

Amanda Nunes says she's hoping Holly Holm wins the 1st ever UFC featherweight title fight at UFC 208 ... so she can beat her ass and take the belt right away from her.

Nunes is the reigning bantamweight champ at 135 lbs ... and says she wants to go up in weight to the 145 class and take that belt too!

Holm is fighting Germaine de Randamie for the 1st ever featherweight belt on Feb. 11th -- but Nunes says since she already beat Germaine once in her career, she wants a crack at the only other person to beat Ronda Rousey.

Here's a taste of how things would go down if UFC star Jon Jones and his NFL star brother, Arthur Jones, decided to throw down in the street ... awesome, right?!

The Joneses have been hanging out as a family this week in NY -- even Cardinals star Chandler Jones is there -- and there's a lot of combat going on.

Besides the punches, kicks and elbows ... the 3 multi-millionaires also went out to breakfast -- and compared jewelry.

By the way, Arthur has previously told us he's considering an MMA career after he hangs up his cleats. So, don't count him out.