Ernie Els, who went to the semifinals of the WGC - Match Play Championship, remained in second place. Phil Mickelson jumped one spot to third while former number-one David Duval fell to fourth.
Lee Westwood and Colin Montgomerie held on to fifth and sixth, respectively.
Davis Love III came in seventh followed by Hal Sutton. Sutton, seeded second in the Match Play Championship, was eliminated in the first round by Australian Nick O'Hern.
Tom Lehman and Vijay Singh traded places this week with Lehman earning the ninth spot and the reigning Masters champion taking 10th. Both players seeded in the top-four took early exits from the Match Play event. Lehman was bounced by Brad Faxon in the third round while Singh was defeated in the second round by Toru Taniguchi.
Jesper Parnevik remained 11th with Darren Clarke, the 2000 Match Play champion, coming in 12th. Nick Price and Michael Campbell were 14th and 15th, respectively.
Sergio Garcia climbed one spot to 15th while Jim Furyk, who withdrew from the match-play tournament, dropped to 16th.
Justin Leonard moved up one to 17th as Stewart Cink fell one to number-18.
Thomas Bjorn and John Huston switched rankings this week with Bjorn coming in 19th and Huston rounding out the top-20.
Steve Stricker, who won the WGC - Match Play Championship leaped from 91st at the end of 2000 to 47th this week. Pierre Fulke, who lost to Stricker in the finals, moved up 13 places from 45th to 32nd and Taniguchi, who made it to the semifinals, jumped from 58th to 49th.
01/08 12:54:25 ET