Simpson made a pair of late birdies for 3-under-par 67 at the McGladrey Classic. He was one shot behind Billy Horschel, who picked up four shots over his last four holes Friday for 64.
Simpson said he would play the PGA Tour’s final tournament next week at Disney in a bid to win the money title.
Luke Donald, currently atop the list by $68,971 over Simpson, said earlier he has added Disney to his schedule. Donald also leads the European Tour money list.
Horschel went eagle-birdie-par-birdie to build a one-shot lead over Simpson and Michael Thompson, who had 65. Horschel is at 12-under 128.
CHAMPIONS TOUR: In San Antonio, Fred Couples shot 7-under-par 65 to take a share of the first-round lead with Steve Lowery at the AT&T Championship.
Lowery settled for a birdie at the 190-yard 13th after his 6-iron shot lipped out, then holed out from the fairway from 168 yards with an 8-iron for an eagle on the next hole.
Hal Sutton and Nick Price were a stroke behind, and Tommy Armour III and Chien Soon Lu had 67s.
Ten players were 4-under: Phil Blackmar, Mark Calcavecchia, Bobby Clampett, Russ Cochran, Scott Hoch, John Huston, Gil Morgan, Steve Pate, Loren Roberts and Eduardo Romero.
LPGA TOUR: In Kuala Lumpur, Malaysia, Americans Stacy Lewis and Brittany Lang share the lead after the second round of the Sime Darby LPGA Malaysia.
Lewis shot 6-under-par 65 and Lang finished with a 67 at the Kuala Lumpur Golf and Country Club.
Lewis dropped two strokes at the par-4 ninth, but made eight birdies for a 9-under 133 total.
Na Yeon Choi of South Korea and Dewi Claire Schreefel of the Netherlands each shot 68s to tie for third, a stroke behind the leaders.
EUROPEAN TOUR: In Valamoura, England’s Simon Khan shot 6-under-par 66 to take a one-stroke lead in the Portugal Masters after the second round.
Khan opened with three birdies in the first four holes at the Oceanico Victoria course. He also birdied the last two to finish at 13-under 131.
The 39-year-old Englishman leads Rhys Davies (67), Felipe Aguilar (66) and first-round leader James Kingston (68) by a shot.
Martin Kaymer had 68.
NATIONWIDE TOUR: In Miami, Jason Kokrak has opened up a three-shot lead in the Miccosukee Classic.
Kokrak shot 5-under-par 66 in the second round and is at 13-under 129. Luke List (66 on Friday) and Jonas Blixt (65) are at 10-under.
Aiken native Matt Hendrix shot 64 and is at 135. Former Augusta State golfer Major Manning had 69 and made the cut on the number at 139.
North Augusta’s Scott Brown shot 72-70–142 to miss his fourth consecutive cut. Brown is 17th on the money list with two more tournaments after this one. The top 25 earn PGA Tour cards for 2012.