Phil Mickelson stayed in second place followed by David Duval, Ernie Els and Vijay Singh.
Davis Love III remained in sixth and Spain's Sergio Garcia came in seventh once again this week.
Darren Clarke held on to eighth place while current PGA Champion David Toms, who will defend his Michelob Championship title in Virginia this week, and Jim Furyk completed the top-10.
Colin Montgomerie kept his 11th ranking this week as Retief Goosen moved up one place to No. 12. Scott Hoch jumped two notches to 13th, while Irishman Padraig Harrington dipped two to 14.
Scott Verplank, one of Curtis Strange's captain's picks for the Ryder Cup which was supposed to have been played last weekend but was postponed because of the terrorist attacks on America, climbed one spot to No. 15.
Mike Weir came in 16th this week, followed by Thomas Bjorn and Mark Calcavecchia, who both held on to their rankings from the week prior.
Lee Westwood, who won six times in Europe in 2000 but has yet to visit the winner's circle in 2001, switched places with Paul Azinger this week. Westwood came in 19th while Strange's other captain's pick, Azinger, placed 20th.
Justin Leonard successfully defended his Texas Open title on Sunday and with his first victory of the 2001 campaign, he moved up six spots to No. 35.
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