TMZ Sports on FS1

54-year-old Herschel Walker says he wants to get back in the cage and for an MMA bout THIS YEAR -- and tells TMZ Sports he's absolutely down to fight Rampage Jackson.

Walker appeared on the "TMZ Sports" TV show (airs Friday night on FS1) -- and told the guys he still has the fire and ability to compete in a real deal MMA fight.

In fact, Walker says he's already had conversations with Bellator CEO Scott Coker about fighting before the end of the year.

As for his opponent, Walker made it clear -- he wants a "worthy" adversary ... not "some bum" off the street. We brought up Rampage ... Walker said he's absolutely down.

FYI, Rampage is 38 and fighting this weekend at Bellator: Dynamite 2.

UFC superstar Dan Henderson says Michael Bisping can crack all the geriatric jokes he wants -- 'cause when the two face off in the Octagon, Bisping's gonna "end up getting his ass beat by an old man."

45-year-old Dan joined the guys on the "TMZ Sports" TV show -- and responded to Bisping's trash talk .. specifically when he said he wants to fight Dan before he dies of old age.

It's pretty good stuff ... Dan vows to whoop that ass -- AGAIN -- and says he'll retire right after he does.

He also gives us an update on the contract situation for the fight.

Check out the whole interview tonight on "TMZ Sports" on FS1.

Stephen A. Smith is DELUSIONAL for claiming he could've done a better job than Marcia Clark at prosecuting O.J. Simpson ... so says O.J.'s former lawyer Carl Douglas.

Douglas -- who was a key member of Johnnie Cochran's legal team -- says he heard Stephen A.'s statements on "First Take" ... and says, "It's one of the least intelligent things I've ever heard uttered from his mouth."

Of course, Smith confidently claimed, "If it was me [prosecuting O.J.], there's no way in hell Johnnie Cochran would have beaten me with the evidence that they had ... I'm not even a lawyer."

Now, Douglas says he loves and respects Smith -- but was adamant, "I don't think there's any chance in hell that he could ever do anything near as talented as Marcia Clark."

"You go ... or they go."

That's how UFC fighter Valentina Shevchenko feels about her trainer's decision to pull his gun and fire at gun-toting thieves last month during an armed robbery in Peru.

Shevchenko joined the guys on the "TMZ Sports" TV show and broke her silence about what was going through her mind when 3 armed men stormed the restaurant where she was having dinner.

As we previously reported, her trainer, Pavel Fedotov, pulled his gun and fired at the robbers, killing 1 -- but was shot in the stomach during the exchange.

Shevchenko says Pavel is still hospitalized-- but hopes he'll be able to travel to Chicago to see her fight Holly Holm at UFC on FOX 20 on July 23.

George Foreman says the legendarily nasty public feud between Muhammad Ali and Joe Frazier was actually friendly behind closed doors ... telling TMZ Sports the two men secretly loved each other.

The war between Ali and Frazier is well-known -- Ali called him names like "gorilla" and "Uncle Tom" -- which reportedly wounded Frazier until his death in 2011.

In fact, Frazier famously expressed his distaste for Ali in a 1990 interview -- "I hated Ali. God might not like me talking that way, but I hated that man. First he made me a white man, then he made me a n****r.”

"How would you like it if your kids came home from school crying because everyone was calling their daddy a gorilla?"

But when Foreman -- who called Ali his "best friend" -- joined the guys on the "TMZ Sports" TV show (airs tonight on FS1) ... we asked if Ali privately regretted taking things so far with his old foe.

Check out the clip ... Foreman says he was tight with both men and knows they all had love for each other.

"Whatever names we were called, they were all taken as a joke."

Knowshon Moreno says he's laser-focused on an NFL comeback -- with the running back telling TMZ Sports he's healthy and ready to go ... and would love to return to his old team in Denver.

The 28-year-old -- who hasn't played since suffering an ACL injury in 2014 -- appeared on the "TMZ Sports" TV show on FS1 and discussed his comeback plans.

"I still have a lot in the tank ... probably TOO MUCH in the tank! I have to let it out!"

You read that headline correctly ...

"Guardians of the Galaxy" star Dave Bautista says he got a WHOLE NEW respect for pole dancing -- when he actually tried to do some of the moves himself ... yes, Bautista got on the pole!

Both Dave and his pole dancing champion wife, Sarah Jade, joined the guys on "TMZ Sports" (airs tonight on FS1) and told us all about the serious strength and athleticism it takes to master the craft.

FYI, Sarah just took 1st place at Miss Pole Dance America 2016 -- one of the most prestigious competitions in the world.

You gotta watch the FULL INTERVIEW tonight on FS1 -- we even talked with Dave about the highly anticipated 'Guardians' sequel ... it's good stuff!

Cris "Cyborg" Justino has a message for Ronda Rousey -- STOP HIDING BEHIND YOUR PILLOW AND FIGHT ME!

Fresh off her dominating performance at UFC 198, Cyborg joined the guys on the "TMZ Sports" TV show and called out the UFC legend ... even using a prop to make her point!

You gotta watch the entire interview tonight on FS1 (9 PM PT, 12 AM ET) -- we also asked Cyborg if she thinks she could take Conor McGregor in the octagon ... wait'll you hear what she says!

You know that crazy clip of Indians shortstop Jose Ramirez kicking his helmet backwards ... only for it to magically reappear and smack him back in the head??

Turns out, it's not really that magical ... it's physics -- so says astrophysicist Neil deGrasse Tyson.

The science whiz joined the guys on the "TMZ Sports" TV show (airs tonight on FS1) -- and explained why the helmet returned to Ramirez like Yondu's whistle arrow in "Guardians of the Galaxy."

Jon Jones might have some brotherly company in the UFC ... 'cause his NFL star sibling Arthur Jones tells TMZ Sports he's considering an MMA career after his football days are over.

Arthur -- a defensive tackle for the Indianapolis Colts -- says he's been training with Jon for years ... and came thiiiis close to taking an MMA fight during the NFL lockout in 2011.

He also happens to be a killer wrestler -- and says he's confident he could hang with pro fighters because he's kicked Jon's ass on several occasions.

Seriously!

So, what does Arthur do to relax? He's a dog breeder who runs Jones Bros Kennels ... where he breeds dogs that are so big, his kids can ride 'em like horses!

Charlie Murphy is reflecting on his most famous basketball opponent ... opening up about how Prince didn't just change music -- he changed the world.

Of course, Charlie's "Chappelle's Show" sketch about his pick-up game with Prince is legendary ... but Murphy says it shouldn't have been a shock that His Purpleness was such an incredible athlete.

"If you seen his last show, how could you not watch his show and go, 'That dude is an athlete!'"

Prince clearly made an impact on Murphy -- and he joined the guys on the "TMZ Sports" TV show on FS1 to tell us what the singer meant to him. It's pretty good stuff.

Nobody wants to see a Mayweather vs. Pacquiao rematch ... so says boxing superstar Gennady Golovkin who says if Floyd wants to come back, he should call GGG instead.

Gennady appeared on the "TMZ Sports" TV show (airs Tuesday night on FS1) -- and told us he's still VERY confident he'd knock Floyd out if Mayweather ever mustered up the courage to face him in the ring.

And with rumblings of Floyd coming out of retirement for one last fight, GGG says it would be a huge mistake for Floyd to fight Manny again ... since the first fight was such a dud.

Gennady fights this weekend against undefeated Dominic Wade -- but everyone wants to know who GGG will fight next ... especially with talk of a superfight with Canelo Alvarez.

Check out the clip ... GGG says he's ready for C.A. ... but if he had to choose, he'd fight Mayweather in a heartbeat.

This is awesome ... 2 Villanova basketball stars made a surprise visit to the home of a 4-year-old superfan who's battling cancer -- and now they're getting MAJOR props from the kid's mom!!!

The brave little boy is Blaise Davis -- who's fighting a rare form of bone cancer called Ewing's Sarcoma. His story made national news after a GoFundMe page was set up to help his family pay for medical costs.

Blaise and his mom, Annie, joined the guys on the "TMZ Sports" TV show (airs Friday night on FS1) ... and told us how Villanova stars Ryan Arcidiacono and Daniel Ochefu put together a plan to surprise Blaise in his own home!

For the record, Blaise's parents are both alums -- and Annie says Blaise has naturally become a MASSIVE fan of the Wildcats.

You gotta watch the clip ... Blaise is awesome -- and judging by his energy, he's doing great!

UFC bantamweight champ Dominick Cruz says Urijah Faber's chin looks like a butt -- so, we decided to see if he could seriously tell the difference in a game called, "Butt ... or Urijah Faber's Chin."

Cruz appeared on the "TMZ Sports" TV show (airs Friday night on FS1) -- and played the game ... and did surprisingly well!!

Here's a teaser clip -- but make sure to watch the WHOLE THING on the show tonight ... it's pretty hilarious.

UFC superstar Chris Weidman played the role of Super Bowl bet debt settler in the TMZ office ... punishing the producer who picked the Panthers to win -- by delivering a right-handed pie to the face.

It all went down while Weidman was co-hosting the "TMZ Sports" TV show on FS1 -- and brought up the bet Evan and Van made with Weidman back in February.

The initial bet was "loser gets a leg kick from Chris Weidman" ... but Van (he picked the Panthers) was able to negotiate down to a pie to the face.

Ovince St. Preux says he "humbly accepted" Daniel Cormier's offer to train him for the Jon Jones fight at UFC 197 ... but only in a small guest trainer capacity.

OSP appeared on the "TMZ Sports" TV show (airs tonight on FS1) -- and told the guys he knows D.C. and they're "pretty cool" ... but wants his current trainer Joey Zonar to continue leading his training program.

So, how exactly would Cormier contribute? Check out the clip.

By the way, there's A LOT more in the full interview -- including OSP's thoughts about Jon Jones' legal issues.