PONTE VEDRA BEACH, Fla. — Tiger Woods apologized this morning for cheating on his wife and says he is unsure when he will return to competitive golf.

"I was unfaithful. I had affairs. I cheated. What I did was not acceptable," said Woods, looking composed and speaking in a steady voice. His wife, Elin, was not with him.

As for coming back to the PGA Tour, the planet's best golfer said: "I do plan to return to golf one day. I just don't know when that day will be. I don't rule out it will be this year."

Woods talked for more than 13 minutes from the clubhouse at the TPC Sawgrass, home of the PGA Tour. About 40 people were in the room, including his mother.

Admitting he felt he "deserved to enjoy the temptations" that came with his fabulous success, Woods said he is solely responsible for his actions.

"I am deeply sorry for my irresponsible and selfish behavior," Woods said.

Woods said he was in treatment for 45 days and will return for more therapy.

Woods had not talked in public since his traffic accident Nov. 27 triggered shocking revelations about Woods' serial infidelity.

As for his marriage, he said: "Every one of these questions and answers is a matter between Elin and me, issues between a husband and wife."

In Sweden, Elin's mother, Barbro Holmberg, declined to comment on Woods' apology.