Singh, who not long ago was a weekly staple in the top five, moved from No. 9 to No. 7 this week, dropping Geoff Ogilvy and Retief Goosen one spot apiece to eighth and ninth respectively.
The rest of the top 10 remained the same as a week ago.
Tiger Woods, of course, held on to the No. 1 spot and was followed by Jim Furyk, Phil Mickelson, Adam Scott, Henrik Stenson, Ernie Els, Singh, Ogilvy, Goosen and Padraig Harrington.
Luke Donald and Trevor Immelman remained 11th and 12th, Sergio Garcia parlayed his fifth-place finish Sunday into a one-spot bump to 13th, Paul Casey was knocked to 14th and Charles Howell III held on to No. 15.
Davis Love III was up one spot to 16th, dropping Nick O'Hern to 17th, and David Toms moved up one place to 18th, dipping David Howell to 19th.
Colin Montgomerie rounded out the top 20 again.