No. 1 is definitely in reach for Singh and can happen next week at the WGC-NEC Invitational. Tiger Woods broke Greg Norman's record for total weeks atop the World Rankings at 332, but is in serious jeopardy of losing the No. 1 spot, which he has held since 1999.
If Singh finishes ahead of Woods this week at Firestone Country Club, or if the two players are tied in any position outside the top 10, Singh becomes the No. 1 player in the world next week.
Ernie Els, down one spot to third, only missed the playoff between Singh, Justin Leonard and Chris DiMarco by a stroke. He too can get to No. 1 for the fourth time in his career at the WGC-NEC Invitational.
Els has several scenarios in which he ascends to the top. If he is third alone and Woods is worse than 15th alone and Singh is worse than 19th alone, Els goes to one. If Els is second alone and Woods finishes worse than in a two-way tie for fourth and Singh finishes worse than in a two-way tie for third. Finally, Els can get to first if he wins and Woods doesn't finish second alone.
Phil Mickelson tied for sixth at the PGA Championship to go one, two, three and a tie for sixth in the season's four majors. He stayed in fourth place while reigning U.S. Open champion Retief Goosen moved up one to fifth and Davis Love III dipped one to sixth.
Mike Weir, Padraig Harrington and Jim Furyk held their spots from last week going seventh to ninth. Adam Scott jumped two places this week to round out the top-10.
Kenny Perry, who made his first Ryder Cup team this week, remained in 11th, while Spain's Sergio Garcia fell two to No. 12. Darren Clarke, who opened with a 65 on Thursday at Whistling Straits, and Chad Campbell switched places from last week. Clarke took 13th, while the American, who will also make his Ryder Cup debut for the American side next month, dropped to 14th.
Stuart Appleby came in 15th again this week.
British Open champion Todd Hamilton did not secure one of Hal Sutton's two captain's picks, but stayed in 16th place. DiMarco jumped up nine to No. 17 and Stephen Ames did not move from 18th.
Scott Verplank, who was bypassed for a captain's pick on the U.S. side in favor of 50-year-old Jay Haas and Stewart Cink, moved down two to No. 19 and 2001 PGA Champion David Toms inched down to 20th from No. 19 last week.
Leonard, who had one top-10 prior to his tie for second at the PGA Championship, flew up 22 to No. 25 this week.