Vijay Singh admitted he used deer-antler spray, but he said he wasn't aware that it may contain a substance banned by the PGA Tour.
The 49-year-old first revealed he used the spray in an interview with Sports Illustrated. The magazine said Singh paid one of Sports With Alternatives To Steroids' owners $9,000 in November for the spray, hologram chips and other products.
The magazine also reported Baltimore Ravens linebacker Ray Lewis sought help from SWATS in his recovery from a torn right triceps. The company said its deer-antler substance contains a banned performance-enhancer connected to human growth hormone.
Singh won the last of his 34 PGA Tour titles in 2008. The three-time major champion also has 22 international victories.
CHIP SHOTS: Michael Phelps, an 18-time Olympic swimming champion, signed with Ping to provide his clubs, starting with his appearance in Wednesday's pro-am for the PGA Tour's Phoenix Open. … Kyle Stanley, Tommy Gainey and Scott Stallings are entered in the Phoenix Open, making them the only players at all five PGA Tour events this year.