Woods remained No. 1 in the latest rankings, but his points average in the 47- week indicator dropped from 18.16 to 18.04, which is 7.6 points better than the second-ranked Singh. He led Singh by 7.66 points last week.
With the PGA Tour's 2005 season officially at an end, there was very little change in the top 20 this week.
Phil Mickelson remained third behind Woods and Singh, and he was followed again by Retief Goosen, Ernie Els, Sergio Garcia, Jim Furyk, Adam Scott and Chris DiMarco.
Angel Cabrera replaced Kenny Perry at No. 10, where he was followed by David Toms, Perry, David Howell, Padraig Harrington and Luke Donald to round out the top 15.
Colin Montgomerie, Michael Campbell, Davis Love III, Darren Clarke and Paul McGinley held on to their spots to complete the top 20.
Japan's Kaname Yokoo, who lost to Woods on the fourth playoff hole Sunday, climbed into the top-200 and now sits at 170th.