UFC 158: St-Pierre vs Diaz Results

Georges St-Pierre defeated Nick Diaz by Unanimous Decision in round 5 (5:00) in the Welterweight title main event of UFC 158: St-Pierre vs Diaz, held Saturday, March 16, 2013.

UFC 158: St-Pierre vs Diaz is an MMA event from Ultimate Fighting Championship, scheduled for Saturday, March 16, 2013. The card streams as a Pay-Per-View. A championship title is on the line. 158 is part of UFC's numbered event series. 12 fights are scheduled across the card.