On the day Tiger Woods usually hoists a trophy at Torrey Pines, a newspaper reported Sunday night that the world’s No. 1 golfer was busy with the birth of his first son.

The San Diego Union-Tribune, citing an unidentified person with ties to the Woods family, reported that Elin Woods gave birth for the second time. They had a daughter, Sam Alexis, in June 2007 on the day after the U.S. Open.

Woods did not have an announcement about the birth on his Web site, where he reports his news. Neither his agent nor his spokesman immediately returned messages seeking comment.

The 33-year-old Woods is a six-time winner of the Buick Invitational, where he also won the U.S. Open last summer for his 14th career major. That was the last tournament he has played because of knee surgery a week later that ended his 2008 season. He is expected to return before the Masters, possibly as early as the Accenture Match Play Championship on Feb. 25.