Within MMA there is an understanding like the motto of football's any given Sunday motto, where a fighter can win any fight no matter who they are against, they just have to want it more than the other guy. Wanting it more can come down to a number of things: blocking your chin, watching for the submission or takedown, or not letting the fight go to the judges. This list is meant to show where either a good fighter had a crappy night(s) and just didn't have their eye on the prize.
Notable Wins: Tank Abbott, Houston Alexander
Notable Losses: Roy Nelson, Matt Mitrione, Seth Petruzelli
Current Record with the UFC (1-1)
Kimbo had unprecedented celebrity before stepping into the Octagon. His Youtube videos were infamous and his striking was feared. Yet all it took was a 14 second knockout from Petruzelli to show the weakness in his chin. It took Roy Nelson laying on top of Slice and giving him lovetaps to show that he had no ground game, and it tooke Mitrione's leg kicks to show that his knees were no good. If anything Kimbo may have one or two fights with another organization left in his gas tank before he finally hangs up his gloves.
Notable Wins: Wanderlei Silva, Mark Coleman, Josh Barnett
Notable Losses: Gabriel Gonzaga Junior Dos Santos, Fedor Emelianenko
Current record with the UFC is (3-3)
Mirko Cro Cop falls under the category of a Pride FC superstar who couldn't transition well into the UFC. After blasting through an inexperienced Eddie Sanchez upon entering the UFC he would face Gonzaga to determine who would face Randy Couture for the Heavyweight title. As you can see in the photo above Gonzaga leveled Cro Cop with a head kick, something Cro Cop was known for doing himself. After that fight he would lose to Cheick Kongo, beat Mostapha Al-Turk, and then lose to Junior Dos Santos by submission do to strikes.
Notable Wins: Rampage Jackson, Michael Bisping, Kazuhiro Nakamura
Notable Losses: Rampage Jackson, Chuck Liddell, Rich Franklin
Current record with UFC: (3-5)
Here is another Pride FC star who hasn't been able to reach full potential in the UFC. He had great matches with Rampage and Liddell as well as a great knockout of Keith Jardine. But since coming to the UFC from Pride his record hasn't been that spectacular which includes losses to Liddell, Franklin, and an embarrassing knockout by Rampage which included three punches after he had been knocked out. Yet with his recent decision to go back to Middleweight and a win over Michael Bisping there may still be hope for Silva.
Notable Wins: Rampage Jackson, Stephan Bonnar, Shogun Rua, Tito Ortiz
Notable Losses: Tito Ortiz, Anderson Silva, Keith Jardine, Rashad Evans
Current Record with the UFC: (8-4)
The idea of Forrest Griffen being an embarrassing performer doesn't come from his performance all the time but also how he has acted after some fights. Griffin had all the momentum in the world after winning The Ultimate Fighter. He even gained a bigger fanbase after his loss to Tito Ortiz due to his fighting style never give up attitude. He also became Lightheavyweight Champion after upsetting Rampage Jackson after they coached The Ultimate Fighter. Yet when he took on Keith Jardine and was TKO'd in the first round, he literally cried in his corner and when he was knocked out by Anderson Silva in what was arguably one of the most embarrassing knockouts in UFC history he couldn't leave the cage fast enough. Yes there were many explanations for his quick exit but he should have been at least enough of a sportsman to commend Silva on his win. He is now trying to earn enough wins for him to get back into title contention in one of the most competition heavy divisions in the UFC.
Notable Wins: Chuck Liddell, Forrest Griffin, Wilson Gouveia
Notable Losses: Houston Alexander, Wanderlei Silva, Rampage Jackson
Current Record with the UFC: (6-6)
Jardine has some incredible wins under his belt including Liddell and Griffin. Yet when he underestimated Houston Alexander and was very vocal about it, the knockout he received sent him spiraling out of control leading to losses against both Thiago and Wanerlei Silva. Right now the only reason he seems to still be contracted to the UFC is his willingness to take any fight.
Notable Wins: Bas Rutten, Dan Severn, Kimo Leopoldo
Notable Losses: Royce Gracie, Don Frye, Rich Franklin, Tito Ortiz
Current Record with UFC (7-6-2)
Here is the prime example of being past your prime. Ken Shamrock is considered one of the founding fathers of the UFC and was incredibly dominant for the beginning part of his career. Yet after his loss to Dan Frye he made a return to the UFC and fared horribly against the newer generation of fighters. The most notable of performances were his trilogy of fights against Tito Ortiz. None of the fights went past the third round with two of them being finished in the first. Shamrock's record with the UFC would end up being (7-6-2) with four of those losses coming from when he made his comeback to the UFC.
Notable Wins: Ken Shamrock, Dan Severn, Kimo Leopoldo
Notable Losses: Matt Hughes, Kazushi Sakuraba
Current Record with the UFC: (11-2-1)
Now here is the man with the best UFC record on this list. Another UFC founding father and the man responsible for introducing UFC fans to Brazilian Jui-Jitsu. He dominated in the UFC for years before heading off to Pride FC and K-1. He is mainly on this list due to his attitude before going into his match with Matt Hughes. The audience knew of his hall of famer status but he felt the need to constantly remind us and how he was going to dominate Hughes. He would be sadly mistaken as Hughes would dominate him for most of their match to win by TKO in the first round.