Ogilvy will play in the PGA TOUR event August 3-6 at Warwick Hills Golf and Country Club, tournament officials said Tuesday.
Ogilvy won the U.S. Open on Sunday at Winged Foot in Mamaroneck, N.Y. He has four career PGA Tour victories since turning pro in 1998. This will be his fifth appearance at the Buick Open, where his best finish was a tie for second in 2003.
Others signed on to play are 2003 Buick Open champion Jim Furyk, John Daly and Chris DiMarco. Furyk will be playing in his 11th Buick Open.
Woods, who won the event in 2002, will be making his eighth appearance. Singh, the two-time defending champion, also won it in 1997.
Former Buick Open champions Woody Austin (1995) and Scott Verplank (1988) also are scheduled to be in the field.