Louis Oosthuizen's 8-under par round of 63 on Sunday has catapulted him to the top of the leaderboard at the 2012 Deutsche Bank Championship at TPC Boston. Oosthuizen is 19-under for the tournament. Second round leader Rory McIlroy sits three shots off the lead after shooting a 4-under round of 67.
Americans Dustin Johnson and Tiger Woods are tied for third place after three rounds of play, both 13-under for the tournament. Johnson shot a 6-under round of 65 on Sunday, while Woods carded a 3-under round of 68.
Keegan Bradley tied Oosthuizen for the round of the day, also shooting an 8-under round of 63 on Sunday. Bradley is tied for 19th place, 6-under par overall for the tournament. Phil Mickelson is tied for 9th place at 9-under, and U.S. Open champion Webb Simpson is tied for 14th place at 8-under par.