BLOOMFIELD TOWNSHIP, Mich. (AP) -- Tiger Woods watched enough of the PGA Championship to see Padraig Harrington join him as the only players this decade to win two majors in the same season, and he congratulated the Irishman in a newsletter Tuesday.

The question is whether Woods will be able to stop Harrington from trying to win three straight majors at the Masters. Woods had reconstructive surgery on his left knee and has no timetable for his return.

Repeating comments he made last week in a radio interview, Woods said he is able to move around without crutches, rides a stationary bike as part of his rehab but won't start swing a club until next year.

"I just don't have a choice," Woods said. "We simply don't know what type of swelling there would be or if there would be any residual effects the next day once you start wheeling and dealing on the knee. Everyone's body reacts differently.

"I don't know what the doctors are going to tell me about playing golf down the road," he said. "I'm taking it day-to-day, week-to-week. All I'm doing every day is looking forward to my next day."

Woods said he watched only parts of the British Open, PGA Championship and Senior British Open, where friend John Cook was in contention. But he sounded eager about watching the first Ryder Cup without him since 1995.

"I will definitely watch some of the Ryder Cup matches and will be pulling hard for the American team," he said. "I wish I could do more than root!"

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