Top sprinters Tyson Gay, Asafa Powell and Sherone Simpson acknowledged Sunday that they had tested positive for banned substances.

Gay is the American champion in the 100 meters. Jamaica's Powell is the former world-record holder in the 100, while countrywoman Sherone Simpson has a gold and two silver Olympic medals on her resume.

INVERNESS, Scotland — Phil Mickelson birdied the first playoff hole to beat Branden Grace and win the Scottish Open on Sunday, ending his 20-year wait for a victory in Europe.After three-putting the 72nd hole to miss out on a win in regulation, Mickelson produced a superb pitch from 45 yards that landed within a foot of the 18th pin, leaving Grace a 25-footer to match him.

OMAHA, Neb. — Kenny Perry completed his comeback from 10 shots down after the second round to win the U.S. Senior Open on Sunday.Perry shot a final-round 63 at the Omaha Country Club and won his second straight senior major by five strokes over Fred Funk. His 64-63 finish set a tournament record for the last 36 holes.

LOUDON, N.H. — Morgan Shepherd became the oldest driver to start a race in NASCAR's Sprint Cup series.The 71-year-old Shepherd started 41st in the 43-car field Sunday. He completed 92 of the 301 laps in New Hampshire.