Who challenged Georges St-Pierre in the UFC 129 main event?

Jake Shields challenged Georges St-Pierre in the UFC 129 main event. Their UFC Welterweight Championship fight took place on April 30, 2011, at Rogers Centre in Toronto, Canada.

Shields arrived as one of the most accomplished champions outside the UFC. He had held major titles in Strikeforce and other organizations and entered the bout on a long unbeaten run. After signing with the UFC, he defeated Martin Kampmann at UFC 121, setting up the title opportunity against St-Pierre.

St-Pierre controlled much of the five-round contest with his jab, wrestling, and positional striking, winning by unanimous decision. The judges scored it 50–45, 48–47, and 48–47. The fight was also historically notable because UFC 129 set an attendance record for the promotion at the time, with 55,724 spectators.

Nick Diaz, Josh Koscheck, and Carlos Condit are plausible mix-ups because each was connected to St-Pierre's title history. Koscheck challenged him at UFC 124, Diaz faced him at UFC 158, and Condit fought him at UFC 154. Shields was the opponent at UFC 129.