UFC 101: Declaration was a mixed martial arts pay-per-view event held by the Ultimate Fighting Championship (UFC) on August 8, 2009 in Philadelphia, Pennsylvania. It was the first UFC event held in Philadelphia. The event featured the second title defense of Lightweight Champion B.J. Penn against Kenny Florian, and a non-title Light Heavyweight bout for Middleweight Champion Anderson Silva against former Light Heavyweight Champion Forrest Griffin.
Background
A previously announced bout between Rousimar Palhares and Alessio Sakara was cancelled due to a broken leg suffered by Palhares during training. Thales Leites stepped in to face Sakara.
George Roop stepped in against George Sotiropoulos after Rob Emerson pulled out of the matchup due to a cut requiring stitches.
Results
Bonus awards
Fighters were awarded $60,000 bonuses. Fight of the Night: Anderson Silva vs. Forrest Griffin Knockout of the Night: Anderson Silva Submission of the Night: B.J. Penn