Arnold Palmer, left, and Tiger Woods watch as golfers tee off on the first hole during practice for the U.S. Open golf tournament at Merion Golf Club, Tuesday, June 11, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar)

Photo by: Gene J. Puskar

Arnold Palmer, left, and Tiger Woods watch as golfers tee off on the first hole during practice for the U.S. Open golf tournament at Merion Golf Club, Tuesday, June 11, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar)