Vijay Singh held onto the No. 1 position as Tiger Woods was denied a chance to overtake the Fijian when the Nissan Open was reduced to 36 holes. Woods, who will go for his third straight Match Play title at La Costa this week, held onto the No. 2 spot while Ernie Els remained at No. 3.
Reigning Masters champion Phil Mickelson was fourth followed by two-time U.S. Open winner Retief Goosen. Sergio Garcia moved into the sixth position while Scott climbed to No. 7.
Padraig Harrington stayed put at No. 8. Mike Weir plunged three spots to No. 9 and Davis Love III rounded out the top 10. Stewart Cink fell two spaces to No. 11 while Stuart Appleby dropped one spot to No. 12.
Darren Clarke and Miguel Angel Jimenez held onto their rankings from last week followed by Campbell, who jumped six spots to No. 15. David Toms fell to No. 16 while Luke Donald moved up to No. 17. Chris DiMarco was down to No. 18 and Kenny Perry dropped to No. 19.
Justin Leonard completed the top 20 with Stewart Cink falling to No. 21.
Thongchai Jaidee vaulted to No. 58 in the world following his second straight Malaysian Open title on Sunday.