Philadelphia, PA -- (Sports Network) - Tiger Woods claimed his 68th PGA Tour win on Sunday and extended his lead at the top of the world rankings.

Woods, after winning his own tournament, the AT&T National, extended his lead over No. 2 Phil Mickelson from 1.84 to 2.82 average points.

Paul Casey remained No. 3 and was again followed by Kenny Perry and Sergio Garcia.

Geoff Ogilvy and Henrik Stenson exchanged places with Ogilvy up to six, while Steve Stricker, Jim Furyk and Vijay Singh remained eighth through 10th.

Camilo Villegas inched up one to 11, knocking Padraig Harrington down to 12, and he was followed by Sean O'Hair, who stayed put at 13. Anthony Kim took third behind Woods and moved up one to 14th this week, bumping Robert Karlsson down to 15th.

Ian Poulter and Lucas Glover remained 16 and 17, while Lee Westwood was up one to 18 and Open de France winner Martin Kaymer jumped nine to 19th. Rory McIlroy dipped two to 20th and Ross Fisher slipped out of the top 20 this week.