UFC middleweight champion Chris Weidman accused Vitor Belfort of cheating, based on his fluctuating testosterone levels, during their UFC 187 weigh-in on Friday.
MMA Live Extra
UFC 187 preview, post-weigh-in (2:40)
Lightweight contender Donald Cerrone helps break down UFC 187 and react to recent rulings from the Nevada State Athletic Commission.
Best of Chris Weidman
Weidman makes a statement (2:16)
Talk UFC 187, Anthony Johnson versus Daniel Cormier, the Jon Jones histrionics and more with Brett Okamoto at 1 ET.
Rumble shops for a Ferrari, Lamborghini (1:19)
Anthony Johnson doesn't exactly hide his emotions on social media. "Rumble" explains to Brett Okamoto his love-hate relationship with fans.
First Cris Cyborg wrote a scathing Facebook post about Ronda Rousey and her "grumpy face," and then the UFC president promised unprecedented interest in the potential UFC megafight.
UFC middleweight champion Chris Weidman knows full well that a less massive Vitor Belfort won't necessarily be a less dangerous Vitor Befort at UFC 187.
Ask John Dodson his least favorite event of all time and he's likely to say September's UFC 178 pay-per-view in Las Vegas. Flyweight champion Demetrious Johnson headlined the card opposite Chris Cariaso and ultimately earned his fifth title defense in the form of a submission in the fifth round.
Despite the legal issues that Jon Jones must overcome, UFC heavyweight champion Cain Velasquez is confident he'll eventually cross paths with Jones.
Anthony Johnson's road to a title has been rife with bumps in the road -- inside the cage and out. "Rumble" explains the struggle and endurance it took to get him to where he is today.
Former world boxing champion Holly Holm will return to the Octagon opposite Marion Reneau at a UFC Fight Night event on July 15 in San Diego.
A light heavyweight matchup featuring Ovince St. Preux and Glover Teixeira will headline a UFC Fight Night on Aug. 8 in Nashville.
The MMA champion tells "Access Hollywood" the one scenario in which she can see herself taking on the boxing champion.
Brett Okamoto recaps Frankie Edgar's win over Urijah Faber in Manila and why Edgar deserves to face the winner of July's featherweight title fight between Jose Aldo and Conor McGregor.
The brother of former mixed martial arts champion Fedor Emelianenko has been sentenced to 4½ years in prison after being convicted of aggravated sexual assault.
Before he became UFC champion, Chris Weidman ran the gantlet of middleweight contenders. MMA Live looks back on his July 2012 win over the recently retired Mark Munoz.
Cormier on replacing Jones, fighting Johnson (8:57)
The Nevada State Athletic Commission unanimously approved several amendments to its anti-doping practices Friday.
Dana White: Belfort not a cheater
UFC president Dana Whites said of Vitor Belfort, who was accused by Chris Weidman of being a cheater at Friday's weigh-in: "He's absolutely without a doubt the most tested fighter that's ever fought in the UFC. It's legit. He's clean."
All the hubbub at UFC 187 weigh-ins
ESPN MMA writer Brett Okamoto on UFC 187: "I'm excited to see this Weidman vs. Belfort fight because it's a long time in the making. We were supposed to see this thing one year ago. It was scheduled in May of 2014."
Johnson: Opponent didn't matter
Anthony "Rumble" Johnson said of preparing for Jon Jones, then having to switch to Daniel Cormier at UFC 187: "My motivation was still the same, the task was still there ... to win a title. To me it didn't matter who it was."
Chris Weidman @chrisweidmanufc
#teamweidman recovering from weight cut. #Andstill #UFC187
Chris Weidman @chrisweidmanufc
I just wanna thank all my family, friends, fans & sponsors for all of the love! Tomorrow night I will make you all proud. #UFC187 #Andstill