Singh, who will defend his title this week at Disney World, maintained the top spot in the rankings by a solid margin, but Els is inside 1.5 points after his latest European Tour title.
Tiger Woods held onto the third spot in the rankings while Masters champion Phil Mickelson followed at No. 4. Reigning U.S. Open winner Retief Goosen rounded out the top five.
Davis Love III stayed put at No. 6. Mike Weir, Padraig Harrington and Stewart Cink also didn't move up or down, maintaining the seventh through ninth positions. Sergio Garcia, who earned his fifth career victory on the European Tour at the Mallorca Classic on Sunday, moved up one spot to No. 10.
Adam Scott dropped one to No. 11, followed by Jim Furyk, who held onto the 12th spot. Chad Campbell was up two positions to No. 13 while Chris DiMarco fell one space to No. 14. Darren Clarke also dropped one to No. 15.
Miguel Angel Jimenez jumped three spots to come in at No. 16 this week. Stuart Appleby and Kenny Perry stayed put at Nos. 17 and 18, respectively, and British Open champion Todd Hamilton fell three positions to No. 19.
David Toms tied for fourth at the Chrysler Classic of Greensboro and returned to the top-20 in the rankings this week.