World No. 1 Tiger Woods was off for the second straight week following his victory at The Masters. Vijay Singh remained No. 2, but inched closer to Woods with his playoff win at the Shell Houston Open on Sunday.
Ernie Els, Phil Mickelson and Retief Goosen remained Nos. 3, 4 and 5, while Scott moved into the sixth position.
Meanwhile, Padraig Harrington, Chris DiMarco, Sergio Garcia and David Toms each slipped one space to make room for Scott's climb.
Mike Weir stayed in the 11th position, while Luke Donald and Stewart Cink exchanged positions from one week ago with the Englishman moving to 12th. Davis Love III held on to the 14th slot.
Darren Clarke and Kenny Perry exchanged spots from last week with the Ulsterman moving into the 15th space this week. Stuart Appleby, Miguel Angel Jimenez, Chad Campbell and Scott Verplank rounded out the top 20.
John Daly, who lost to Singh in a playoff in Houston, climbed 19 places to 34th this week.