This was the second straight week that a PGA Tour event was forced into a Monday finish, and again Singh was the beneficiary. He won last week's Houston Open and this Monday's title in New Orleans gives him three on the season.
The Fijian is still second to Tiger Woods in the world rankings, but the gap between the two has now shrunk to 2.14 points.
Woods returns to action this week at the Wachovia Championship in an attempt to strengthen his No. 1 ranking.
Ernie Els remains in the third spot followed by Davis Love III. Masters champion Phil Mickelson, who tied for second in New Orleans, moved up one position to No. 5.
Mike Weir, who won last year's Masters, dropped one spot to No. 6. Reigning U.S. Open champion Jim Furyk held onto the seventh spot followed by Padraig Harrington, Retief Goosen and Stuart Appleby, all of whom remained unchanged to round out the top 10.
The next 10 spots in the rankings were also unchanged with Kenny Perry, Chad Campbell, Adam Scott, Darren Clarke and 2003 Wachovia Championship winner David Toms holding down the 10-15 rankings.
Scott Verplank, Jonathan Kaye, Nick Price, K.J. Choi and Jay Haas followed to complete the top 20.
Current World Rankings