Tiger Woods remained in first as his nearest competitor, Phil Mickelson inched closer to the top spot after his victory at the Bob Hope Chrysler Classic over the weekend. Mickelson's win was 20th on the PGA Tour and earned him a career exemption on tour.
David Duval, the reigning British Open champion, stayed third, followed by Sergio Garcia and Ernie Els. Els was tied for the lead at the European and South African Tour's Alfred Dunhill Championship but faltered down the stretch Sunday with a late double-bogey that dropped him out of the running.
David Toms, Davis Love III and Vijay Singh all held their rankings from last week, taking sixth, seventh and eighth, respectively.
Retief Goosen, the 2001 U.S. Open champion, tied for second at the Alfred Dunhill Championship and moved to No. 9 in this week's rankings. Weir came in 10th despite a final-round 73 at the Bob Hope Chrysler Classic that saw him finish tied for 52nd.
European Ryder Cuppers Darren Clarke and Padraig Harrington each dropped one spot as Weir moved forward. Clarke took 11th while the Irishman finished 12th for the week.
Jim Furyk once again placed 13th followed by Bernhard Langer, Colin Montgomerie and Scott Verplank, who all held their spots from the previous week.
Chris DiMarco, who had an outside chance at winning the Bob Hope event until he splashed his second in the pond guarding the 18th green, switched places with Toshi Izawa. DiMarco took 17th as Izawa dipped to 18.
Bob Estes dropped one to 19 and Robert Allenby rounded out the top-20.
David Berganio, Jr., who lost the playoff to Mickelson in California, broke into the top-100 finishing 99th this week.