Not many fighters would ever say no to a rematch of a fight they lost, but the winners also want to prove they are the better of the two when a result is controversial.
With revenge and redemption on the fighters' minds, these five fights give MMA fans the chance to see some of the UFC's best go at it again to try to solidify their position as the better and more-deserving winner.
There will be no shortage of UFC rematches this summer, and while some will have titles on the line, others will feature MMA legends fighting to settle rivalries that have lasted over a decade.
These are the best upcoming rematches that the UFC has to offer.
After Vitor Belfort and Wanderlei Silva finish filming The Ultimate Fighter: Brazil, the two Brazilian legends will fight in what will be a rematch of a fight that happened almost 14 years ago.
Belfort stormed out of the gate to knock out "The Axe Murderer" in highlight-reel fashion just 44 seconds into their first bout from 1998. Both entered the fight with 5-1 records and would go onto solidify their position as two of the sport's most exciting fighters over the next decade.
Now, both will enter the Octagon this summer with a combined 77 fights and 38 knockout wins between them.
The first time Forrest Griffin and Tito Ortiz met at UFC 59, it was a breakthrough fight of sorts for the Ultimate Fighter winner who wasn't sure if he really belonged with the top stars of the light heavyweight division.
After Ortiz won a controversial split-decision, Griffin would fight his way back to winning the UFC light heavyweight title before losing it in his very first defense.
In the rematch at UFC 106, Griffin was able to get redemption and won a split-decision with scores that mirrored the first fight.
The third and final fight will take place at UFC 148 and will be Ortiz's final fight in MMA.
For the first flyweight bout in UFC history, former UFC title challenger Demetrious Johnson and Ian McCall fought back and forth for three competitive rounds that resulted in a highly debated draw.
Originally, Johnson had been declared the winner, but a scorecard error was confirmed after the event. Unfortunately, the fans and the fighters didn't get the fourth sudden-death round that was set up for the tournament.
The rematch is set to take place at UFC on FX 3, with the winner going on to fight Joseph Benavidez in the finals to determine the first ever UFC flyweight champion.
Bantamweight rivals Dominick Cruz and Urijah Faber will have plenty of time to get to know each other outside of the cage while filming season 15 of The Ultimate Fighter, but both also have experience fighting each other over two previous bouts.
They first met in 2007 while Faber was the WEC featherweight champion. Cruz, with less than 10 fights under his belt, was submitted in the very first round.
When they met again in 2011, Cruz had already won the WEC and UFC bantamweight championships while Faber decided to move down in weight after a rough stretch of fights at 145 pounds. Cruz would win a unanimous decision to set up the rubber-match for later this year.
Former UFC lightweight champion Frankie Edgar spent the better part of his title reign fighting in rematches versus B.J. Penn and Gray Maynard, and he will get the chance to fight in another rematch later this year as the challenger against newly crowned champion Benson Henderson.
Both Edgar and Henderson have showed tremendous improvement in past rematches, so this one promises to have a much more clear and decisive victor than their first, which Henderson won by unanimous decision.
Henderson came back after a fight of the year contender versus Donald Cerrone and submitted "The Cowboy" in the very first round while fighting in the WEC. Edgar had two close fights versus Penn and Maynard, but came back in the rematches to win decisively.
Don't expect there to be any controversy in this one, and if there is, at least the fight is going to be as entertaining as the first.
The long-awaited rematch between UFC middleweight champion Anderson Silva and Chael Sonnen is targeted for UFC 147, and to add to the hype, it is planned to go down in Sao Paulo, Brazil.
Silva won the first fight at UFC 117 when he submitted Sonnen in the fifth and final round of a fight he was losing every minute of. Sonnen dominated the action with his wrestling and top control and even had his moments standing. With only two minutes left, Silva applied a triangle choke that forced Sonnen to tap.
Sonnen has been out-spoken on everything regarding Silva, the fight and Brazil since, and he will get the chance to back it up when they meet again.