Which fighter won the UFC 100 main event against Frank Mir in 2009?

Brock Lesnar won the UFC 100 main event against Frank Mir in 2009.

The heavyweight bout was a rematch of their meeting at UFC 81, where Mir submitted Lesnar in the first round. At UFC 100, Lesnar used his size, wrestling, and ground control to keep Mir under pressure for three rounds. The judges awarded Lesnar a unanimous decision.

UFC 100 took place on July 11, 2009, at the Mandalay Bay Events Center in Las Vegas. It was one of the promotion’s landmark numbered events and also featured Georges St-Pierre defending the welterweight championship against Thiago Alves.

A common mix-up is confusing this result with Lesnar’s later fight against Shane Carwin at UFC 116. Lesnar won that bout by submission, but his UFC 100 victory over Mir was a decision.