Heavyweight title-holder Brock Lesnar became the UFC’s undisputed heavyweight champion on Saturday in the main event of UFC 100 by avenging the only loss of his MMA career with a second-round knockout of interim champ Frank Mir to cap off the historic pay-per-view event, which took place at the Mandalay Bay Events Center in Las Vegas.

UFC welterweight champion Georges St-Pierre retained his title with a unanimous decision over Thiago Alves and Dan Henderson scored a second-round knockout of Michael Bisping in UFC 100’s other top bouts.

Win or lose in his UFC 100 main event bout against interim title-holder Frank Mir, UFC heavyweight champion Brock Lesnar is guaranteed to be one of the top earners at the pay-per-view event, receiving $400,000 to show for the headlining heavyweight unification rematch.

Mir would make $90,000 ($45,000 to show, $45,000 to win) should he defeat Lesnar for the second-straight time, while UFC welterweight champ Georges St-Pierre could tie Lesnar atop the event’s official payroll with a win over challenger Thiago Alves, as he’s slated to make $200,000 to show and an additional $200,000 to win the co-headliner.

All 22 fighters scheduled to compete tomorrow at UFC 100 successfully made weight on Friday at the event’s official weigh-ins, which were held at the Mandalay Bay Events Center in Las Vegas, the same venue which hosts Saturday’s pay-per-view event.

UFC heavyweight champion Brock Lesnar weighed-in exactly at the 265-pound heavyweight limit, while interim title-holder Frank Mir came in 20-pounds lighter at 245. UFC welterweight champion Georges St-Pierre (170) and challenger Thiago Alves (170) as well as TUF 9 coaches Dan Henderson (185) and Michael Bisping (186) also made weight without issue.

According to the Nevada State Athletic Commission’s official calendar, UFC 105 is likely to take place on November 21 at the Mandalay Bay Events Center in Las Vegas.

Fanhouse’s Mike Chiappetta speculates that the pay-per-view event could be headlined by the winner of one of UFC 100’s two title bouts between heavyweights Brock Lesnar and Frank Mir and welterweights Georges St-Pierre or Vitor Belfort’s UFC return against middleweight title-holder Anderson Silva.

Welterweight challenger Thiago Alves, who meets UFC welterweight champion Georges St-Pierre on July 11th at UFC 100, has predicted he'll shock the world with a knockout of GSP. "I'm not just going to win, I'm going to knock him out. I'm going to shock the world."

UFC president Dana White announced during the post-UFC 97 press conference that former UFC light heavyweight champion Chuck Liddell has fought for the last time in his hall-of-fame career. Also announced were the official attendance, gate, and bonus figures for UFC 97.

For the UFC’s historic UFC 100 event on Saturday, July 11th in Las Vegas a stacked card featuring the best of the best in mixed martial arts is not only expected, but required. On Wednesday, Brock Lesnar vs. Frank Mir, Georges St-Pierre vs. Thiago Alves, and Dan Henderson vs. Michael Bisping were confirmed for the event.

UFC welterweight champion Georges St-Pierre recently shot a commercial for Gatorade, a Canadian version of their recent "G" advertisements which feature athletes from both past and present. MMAFrenzy.com learned of GSP's appearance in the ad earlier today and received a photo from the shoot which can be seen after the jump.

The NSAC took no formal action today in its investigation into greasing allegations made by BJ Penn against UFC welterweight champion Georges St-Pierre, who defeated Penn via fourth-round TKO on January 31st in Las Vegas.

Welterweight Nick Thompson has signed with Strikeforce.
After undergoing a knee surgery following his UFC 92 loss to CB Dollaway, UFC middleweight Mike Massenzio will soon undergo neck surgery to repair several bulging discs that are causing stingers. He’ll be sidelined for six months to recover from the surgeries.
A heavyweight boxing match featuring Tim Sylvia and [...]

UFC 100 is expected to be the biggest show in the history of the UFC and rumors have already started to swirl about the event and what the UFC will offer fans. UFC President Dana White confirmed during a recent radio show appearance in Canada that the event will feature a title bout between welterweight [...]

In response to all the controversy surrounding the beating that UFC Welterweight Champion Georges St. Pierre doled out to Lightweight Champion BJ Penn at UFC 94, GSP spoke with MMAWeekly Radio on Wednesday, making the following statements:
George St. Pierre’s successful welterweight title defense at UFC 94 was the direct result of his disciplined preparation and [...]

Nevada State Athletic Commission Executive Director Keith Kizer today forwarded MMAFrenzy.com a copy of BJ Penn’s formal complaint to the NSAC regarding Vaseline being applied to opponent Georges St-Pierre’s back during their headlining bout at UFC 94 on Saturday in Las Vegas.
The complaint can be read in its entirety here.

Georges St-Pierre’s trainer Greg Jackson on Monday commented to MMA Weekly on the application of Vaseline to St-Pierre’s back during his main event victory over BJ Penn on Saturday at UFC 94:
“So in between rounds, (’witch doctor’ Steven Friend) had this little drill that you do – and (cornerman) Phil Nurse is the one who [...]