Who submitted Chael Sonnen in the UFC 117 main event?

Anderson Silva submitted Chael Sonnen in the UFC 117 main event. Silva secured a fifth-round triangle armbar at 3:10, retaining the UFC middleweight championship on August 7, 2010.

Sonnen controlled much of the fight with wrestling, top position, and ground-and-pound pressure. He entered the bout as a determined challenger and came close to pulling off a major upset against Silva, who was widely regarded as one of the sport’s elite strikers and champions.

With less than two minutes remaining, Silva caught Sonnen in a triangle choke and transitioned to an armbar, forcing the submission. The comeback became one of the defining moments of Silva’s career and helped make the fight a UFC Hall of Fame bout.

A frequent mix-up involves the rematch at UFC 148, where Silva defeated Sonnen by second-round technical knockout. At UFC 117, however, the result was a submission in the final round.