ufc_griffin_vs_jackson_high_resolution_desktop_3698x2465_wallpaper-224382_display_imageIn the world of mixed martial arts, anything can happen when two fighters step inside a cage to fight. In the greatest MMA promotion in the world, the Ultimate Fighting Championship, fans have been witness to some of the most incredible fights ever put on and they have also been witness to some of the greatest UFC title fight upsets in history. What are the biggest?

 

UFC 162: Anderson Silva vs. Chris Weidman for the UFC Middleweight Championship

 

Coming into this fight, Silva was 16-0 in his UFC career and had already cemented his legacy as the greatest MMA fighter of all time. Weidman on the other hand was relatively new to the sport and riding an undefeated record into the fight. Silva didn’t take the tough challenger seriously, egging him on throughout the short fight and at the 1:18 mark in the second round, Silva was on his back and saw a loss on his record for the first time in more than seven years.

 

UFC 69: Georges St-Pierre vs. Matt Serra for the UFC Welterweight Championship

 

Coming into this fight, Serra was coming off his victory in The Ultimate Fighter 4 Finale where he beat Chris Lytle. As a reward for their “Comeback” victories, the TUF 4 winners were awarded title shots. Travis Lutter failed to make weight for his against Silva, but Serra made weight and took on GSP. Not many people thought Serra could win that fight. GSP may have taken him lightly and lost his title because of it. Just 3:25 into the fight, Serra got the TKO win in the biggest win of his career.

 

UFC 112: B.J. Penn vs. Frankie Edgar for UFC Lightweight Championship

 

While we know now how good Edgar is now but at this stage in his career, he was a hot shot upstart riding a 12-1 record into a title fight with one of the best of all time, Penn. In what turned out to be one of the fights that saved the first event in Abu Dhabi from being completely ruined by a Silva vs. Demian Maia fight, Edgar claimed the title in one of the biggest upsets of all time. He gutted out a 25-minute unanimous decision victory to take the world title away from the Prodigy.

 

UFC 59: Andrei Arlovski vs. Tim Sylvia for the UFC Heavyweight Championship

 

When these two men for what was the second of their four MMA fights against each other, Arlovski was a heavy favorite. He earned that claim after he needed just 0:47 to win the interim title in a fight with Sylvia a year earlier. When they fought at this event though, things changed. At the 2:43 mark in the first round, Arlovski was on his back and his reign as world champion was over because of a TKO.

 

UFC 68: Tim Sylvia vs. Randy Couture for the UFC Heavyweight Championship

 

After Sylvia beat Arlovski to win the title, he would go on and defend it successfully twice before the UFC practically begged Couture to come out of retirement. In his previous two title fights before retirement, he was knocked out by Chuck Liddell and many thought the outcome here was going to be the same. It wasn’t. At the end of 25 minutes, the fight went to the judges and it was Couture who walked away the world champion via unanimous decision.

 

Honorable Mention:

 

UFC 86: Quinton Jackson vs. Forrest Griffin for the UFC Light Heavyweight Championship

 

Fresh off his upset win against Mauricio “Shogun” Rua, Griffin was awarded a title shot at “Rampage.” In a fight that many expected the former PRIDE champion to dominate, Griffin surprised him and got the win via unanimous decision.

 

UFC 14: Mark Coleman vs. Maurice Smith for the UFC Heavyweight Championship

 

At this point, Coleman was the undefeated champion and Smith was the 4-7 challenger. It was a fight everyone knew Coleman would win, except for Smith. The fight went the distance and Smith was awarded the unanimous decision win and the world title.