Colby Covington better watch his mouth around Todd Gurley ... 'cause Kamaru Usman tells TMZ Sports the NFL superstar would whoop his ass if they ever scrapped!!!

"Todd Gurley would maul him," Usman says ... "He would maul him. He'd maul him."

Of course, Kamaru's talking about this 'cause he says he saw the Rams RB get into a spat with Covington seconds before his championship fight with Tyron Woodley at UFC 235.

So, we had to ask ... who'd win if Gurley and Covington were NOT separated that night?!

His answer -- Gurley ... and he ain't just sayin' that 'cause he HATES Covington ...

"These running backs, they have low centers of gravity, big butts, strong legs. All they have to do is -- it's not going to take them long, once they learn the technique, they're throwing hammers."

"So, yeah, I think he could take him."

The tale of the tape IS interesting ... Gurley outweighs Covington by over 60 pounds and is two inches taller -- so, is Kamaru right??

Only one way to find out ... Dana White, make it happen!!!!!

The wrestling ref who's threatening a lawsuit over the viral dreadlock-cutting incident is "blatantly racist" and has NO CASE ... so says Lil Jon ... who tells TMZ Sports the guy's claims are ridiculous.

High schooler Andrew Johnson -- who is black -- was forced to either cut his dreadlocks or forfeit during a December 2018 match. The story made international news .... and the ref was accused of being racist.

As we previously reported ... the ref, Alan Maloney, is claiming he's been defamed in the coverage following this   ... and he's demanding $100,000 in damages.

Enter Lil Jon -- who has famously shown off his dreads throughout his career -- and he explains why Maloney's actions were inexcusable.

"Dreads are considered to be like a man's crown, that's a lion's mane ... it's sacred," Jon says.

"For this guy to be blatantly racist as he was on that one and to claim he can't get work or whatever, well ... too bad, you shouldn't have been an a**hole."

Epitome of a team player ⬇️

A referee wouldn't allow Andrew Johnson of Buena @brhschiefs to wrestle with a cover over his dreadlocks. It was either an impromptu haircut, or a forfeit. Johnson chose the haircut, then won by sudden victory in OT to help spark Buena to a win. pic.twitter.com/f6JidKNKoI

— Mike Frankel (@MikeFrankelJSZ) December 20, 2018

Maloney says he was strictly following the rules that prohibited wrestlers from having long hair ... but many people have called it a bogus excuse to cover up racism.

Lil Jon agrees with them.

"That was just so blatantly, super racist, it's just ridiculous "

As if 6 Super Bowl rings ain't enough ... Tom Brady has what it takes to compete for ANOTHER set of rings if he wants ... 'cause Mohamed Hadid says he's got Olympic skiing talent!!

TB12 has been hittin' the slopes all week ... freaking Pats Nation out while he posts videos shreddin' through the snow (Hadid thinks he was going around 70 miles per hour).

Naturally, we had to find out how Brady's ski skills compare to the pros ... so we asked Bella and Gigi's dad -- an Olympian for Jordan in 1992 -- if he thought the QB could have been good enough to rep the USA in the Games.

"Oh, for sure ... he has amazing form," Hadid says ... adding Brady should KEEP skiing, despite how scared fans get watching their superstar fly down the slopes.

Hadid says it's actually really dangerous to do what Brady's doing ... but can't emphasize enough how solid he looks ... so, rest easy, New England??

CM Punk ain't lettin' his 2 UFC ass-whoopings stop him from training to fight ... 'cause his teammate and UFC star, Anthony Pettis, says Punk is STILL hitting the gym hard.

TMZ Sports talked to Pettis -- the former UFC lightweight champ who's moving up to welterweight to fight #2-ranked Stephen "Wonderboy" Thompson on Saturday at Fight Night 148 -- about his Roufusport gym mate's fighting future.

"He is still training. I don't know what his plan is. I know he's doing some movies and a couple other things, but I'm not sure if he plans on fighting again or what. But, I know he's still training ... That dude's a hard worker."

Remember, Punk was dominated and choked out by Mickey Gall in September 2016 ... before returning to face Mike "The Truth" Jackson.

Punk lost to Jackson via a unanimous decision ... but looked like a much-improved fighter.

Pettis says he respects the hell outta CM Punk ... even with an 0-2 record.

"Not many people in the world can do what he did. I mean, it's on the biggest stage, and he fought some good guys too. It's not like he was fighting scrubs. He's fighting good guys in the UFC."

"He's training with killers. He's training with me, Woodley. He comes in day and day, and he's getting his butt kicked, and coming back, showing up, so I give him props, man. No matter what, he did it."

We also talked to Wonderboy -- who hasn't fought in 10 months after sustaining an injury fighting Darren Till -- about exactly how he plans to become champ by the end of 2019.

Adrien Broner just took another L ... but, at least this time, it had nothing to do with boxing.

The prickly prizefighter was trying to get into the Voodoo nightclub with his crew Friday night when he was stopped at the door by security.

In the vid -- shot by @theNYguys -- Broner and the bouncer are seen having a long conversation in which he appears to be pleading to let them in ... but to no avail.

Surprisingly, everything appears to end amicably, despite the boxer's group being denied ... Adrien extends a friendly handshake and leaves peacefully.

It's unclear what the issue with their entry was ... we're working on it.

As we reported ... the boxer didn't have a very good week, either -- he kicked things off by posting a vile, homophobic rant threatening to shoot gay people and attack social media star Andrew C. Caldwell.

This resulted in Broner being hit with a restraining order.

Speaking of hits, he hasn't been landing them well in the ring lately ... he's lost 2 of his last 3 fights, and the other one was a draw.

Robert Kraft is finally speaking out about getting caught in the South Florida prostitution sting ... and he's apologizing to his friends, to Patriots fans and to all women.

Kraft says, "In deference to the judicial process, I have remained silent these past several weeks. To correct some of the misinformation surrounding this matter, my attorney made his first public comments on Friday night. I would like to use this opportunity to say something that I have wanted to say for four weeks.

"I am truly sorry. I know I have hurt and disappointed my family, my close friends, my co-workers, our fans and many others who rightfully hold me to a higher standard."

His statement continues, "Throughout my life, I have always tried to do the right thing. The last thing I would ever want to do is disrespect another human being. I have extraordinary respect for women; my morals and my soul were shaped by the most wonderful woman, the love of my life, who I was blessed to have as my partner for 50 years."

TMZ Sports broke the story ... Kraft's legal team, along with 14 other defendants, filed for a protective order earlier this week which would prevent all evidence in the case -- especially the surveillance video from inside the Orchids of Asia spa -- from going public. Kraft's lead attorney, William Burck, insists that video, recorded on cameras set up by police, was illegally obtained.

Burck told the NY Post, "We’ve looked at the law around the warrant for the video surveillance inside the spa, and we think it is a violation of the fourth amendment. We also believe the traffic stop [made by police as the men left the spa] was illegal and a violation of the constitution."

As we first reported, Palm Beach County prosecutors have refused to sign off on the protection order to keep the video from going public -- despite police insisting they are concerned about victims of human trafficking. 

Burck also addressed the alleged "trafficking," calling out law enforcement in Palm Beach and Martin Counties. He says they "have said this is a human trafficking case, but have produced no evidence [to corroborate that]. They have falsely connected Robert Kraft and other men to human trafficking. Now they should correct the record. I have asked that the record be corrected and there’s been no response."

Kraft and his legal team have not accepted a plea deal offer ... which would require him to admit he would have been found guilty if the case went to trial.

Kraft added in his statement, "As I move forward, I hope to continue to use the platform with which I have been blessed to help others and to try to make a difference. I expect to be judged not by my words, but by my actions ... I hope to regain your confidence and respect."

Frank Shamrock says he didn't mean to hurt the dog he tied to a truck and left at an airport ... telling TMZ Sports, "I know what I did was wrong, but there was no way out of it."

As we previously reported, the UFC legend is under investigation after cops say he abandoned a dog at Dallas Love Field Airport ... leaving it tethered to the bed of a pickup truck for 5 days.

Now, Shamrock is explaining to us why he did it ... saying, "I had no other solution to solve that problem."

The former fighter tells us his mother is ailing, and when he traveled to Texas earlier this month to take care of her ... he realized she was in no condition to own dogs anymore.

Shamrock says he tried his best to find new homes for the animals ... but just could not find a place for Zelda.

"I called everybody in Dallas, I tried everything humanly possible to get care for the dog, to let people know that we could not take the dog."

Shamrock says his search for a new home for Zelda lasted up until just minutes before he had to board a plane back home ... so he decided the best thing to do was to tie her up with food and water and call security to come get her.

The problem? Security never found her, and she was stuck in the pickup bed for 5 days before police officers rescued her.

Now, Frank tells us he's heartbroken over the whole ordeal ... mostly because he can't believe people at the airport let her stay in the truck for that long without getting her.

"The dog stayed there for five days. I can't believe that," Shamrock said through tears ... "That wasn't what I was intending. I thought they would come get it."

Frank is now under investigation by the Dallas Police Department, who tell us they are expecting to file a charge of Cruelty to Non-Livestock Animals -- a Class A Misdemeanor -- against the former fighter.

Shamrock says he'll accept any charges, telling us, "I take responsibility for what has happened."

As for Zelda, a spokesperson for the SPCA of Texas tells us she's doing just fine since the incident -- and has received "a ton of TLC" and care while she's been in the organization's custody.

The spokesperson also tells us they expect to put Zelda up for adoption within the next few days.

Mike Tyson says Conor McGregor needs to quit talkin' UFC ownership and focus on what made him a superstar to begin with ... telling TMZ Sports the fighter should do just that -- FIGHT!!!

As we previously reported ... The Notorious demanded a piece of the UFC in a rant at a Chicago bar last week ... following up on what he's been saying for YEARS.

"Give me my rightful shares in the UFC company. That’s all I ask," Conor said at the time.

Tyson says Conor's WRONG ... 'cause ownership is a whole different kinda game ... and Mike seems to think McGregor should get his money the ol' fashioned way -- by kickin' ass.

But, with Conor's insane popularity -- he's headlined the top 3 highest-selling UFC events ever -- something tells us he ain't gonna let go of the ownership thing that easy ... no matter what Iron Mike says.

Think Zion and Duke will coast all the way to the title game without a hitch??? Here's Shaq to make you second-guess your bracket picks ... 'cause he says LSU CAN beat the Blue Devils -- despite the Will Wade scandal.

The Tigers head coach was suspended indefinitely before the Big Dance ... after Yahoo Sports recently reported that wiretapped conversations revealed Wade discussed making a "strong-ass" offer to a recruit.

Shaq clearly ain't sweating the investigation possibly making an impact on LSU's run at a title ... simply saying, "Not a distraction."

The Big Aristotle is probably right ... 'cause the Tigers looked pretty good against Yale on Thursday ... and all they have to do is win 1 more game to match up with the Devils (assuming Duke handles their opponents, of course). 

But, with guys like Williamson, RJ Barrett and Cam Reddish -- 3 projected lottery picks in the NBA Draft in June -- LSU's going to have their hands full ... scandal or no scandal.

Le'Veon Bell is going to help Jamison Crowder have a MONSTER season ... so says the wide receiver himself, who tells TMZ Sports he's going to be open A LOT 'cause of the RB.

"He's going to definitely draw a lot of attention," Crowder says ... "He helps open it up for guys like myself."

Of course, New York went crazy in free agency this month ... signing a bunch of good players to huge-money deals, including Jamison and Le'Veon.

But, Crowder seems most excited for the Bell deal ... telling us, Le'Veon is so good out of the backfield -- there's going to be A LOT of space for him to work in the secondary now.

"I'm just excited to play alongside a guy like Le'Veon Bell."

Crowder ain't kiddin' ... Le'Veon's been a BEAST in the passing game -- and did help open things up for guys like Antonio Brown and JuJu Smith-Schuster when he last suited up for Pittsburgh.

Jamison's takin' note ... and is predicting not only a big season for himself -- but others in the receiving corps too!!!

By the way, Crowder -- who's been working out at his old school, Duke, this offseason -- is running a camp next month for a VERY good cause, and he told us all about why.

View this post on Instagram

Get ready y’all...I’m putting on a camp with the @ndssorg for all my extra chromie homies and our friends. Check out the link in my bio to register. See you April 27th! (Sponsor and in-kind donation questions please email the contact listed)

A post shared by Jamison Crowder (@j_crowd80) on Mar 4, 2019 at 8:56am PST

The Cleveland Indians have set the bar HIGH for the 2019 season -- like 13,000 feet high -- kicking things off with manager Terry Francona jumping outta an airplane!!!

The Indians skipper went skydiving for the first time last week ... and the dude had so much fun, he had to share it with other people on the team. 

Tito took 12 members of his coaching staff and front office out for some team building on Thursday ... somehow managing to persuade everyone to take the biggest jump of their lives ... and the video is awesome!!!

View this post on Instagram

A post shared by themelissasteele (@themelissasteele) on Mar 22, 2019 at 8:34am PDT

Pitching coach Carl Willis and bench coach Brad Mills also got in on the fun at Skydive21 in Arizona ... and Francona assured reporters everyone made it out alive.

“Millsie made it. I was really worried about that," Francona said. "If Millsie didn’t make it, our guys wouldn’t know where to go tomorrow.”

Your turn, Francisco Lindor and Jose Ramirez.

Tim Tebow has it all -- pro baseball career, 2 TV gigs AND an upcoming marriage -- but tells us what fulfills him the most has nothing to do with sports or being in front of a camera.

We had Tim on Friday's "TMZ Live" to talk about "Million Dollar Mile" ... his new competition show on CBS. He was just walking off the field from a spring training game with his NY Mets squad -- which got us wondering about which of his many, many jobs he finds more satisfying.

His answer was pure Tebow. You gotta see what he said about his Foundation and the work he's doing to change lives. Even if you weren't a fan from his NFL and U. of Florida days -- ya gotta admire him when ya see this.

Don't get it twisted, though, Tim's ALL IN for "Million Dollar Mile" too. The show, which premieres next week, is executive produced by none other than LeBron James -- and Tebow's not only the host ... sounds like he's head cheerleader. He explained why he needed some extra care during taping. 

Gotta hand it to the guy -- he's juggling a lot professionally, and don't forget ... he also has to find time to plan a wedding with fiancée Demi-Leigh Nel-Peters.

That last one's a REALLY good problem to have.

You'll never run as fast as Chris Johnson ... but you can take what he takes before working out, 'cause the ex-NFL superstar is launching his own supplement line.

TMZ Sports talked to CJ2K -- who retired from football after the 2017 season -- about getting into the MULTI-BILLION dollar supplement industry ... a biz he's dreamed of being in since he was a teenager.

"When I first got to college, I was 150 pounds and I was a smaller guy," Johnson says.

"It was always something I was trying to, some type of supplement or something I was trying to get so I could gain weight and get bigger like the rest of the guys."

"So, I was like, one day I'm gonna come out with my own supplement."

Yeah, Chris ... the guy who ran a 4.24-second, 40-yard dash at the NFL Combine and went on to become a 3-time Pro Bowler who made 1st team All-Pro, won Offensive Player of the Year in 2009, and rushed for over 2,000 yards in a single season (he's 1 of only 7 guys to accomplish that feat) -- wasn't always a physical specimen.

Johnson Performance Supplements launches April 1 ... and Chris says the brand will feature a bunch of dope products including a pre-workout shake.

It's not only about working out ... Chris says he's also got products that have helped him with his memory.

So, even if you don't run a blazing 4.24 ... ya might be less forgetful.

Chris Johnson's advice to beat his record 40-time: "Run fast." https://t.co/PMwoW4Kju8

— SportsNation (@SportsNation) February 24, 2016