UFC's lightweight champion since January 2008, but Edgar (12-1) picked him apart with energy and movement. Although Penn and Edgar spent nearly the entire fight on their feet trading strikes, the 8-1 underdog from Toms River, N.J., even took down Penn twice, the first time Penn had been taken down in six years at lightweight.

 Edgar won all five rounds on one judge's scorecard and four rounds on another. He collapsed to his knees when the decision was announced.