2007 U.S. Open (25 images)

Phil Mickelson, accompanied by his caddie Jim MacKay, gives a thumbs up to the crowd as he makes his way down the 7th fairway, during the second round of the 107th U.S. Open, at the Oakmont Country Club in Oakmont, Pennsylvania on June 15, 2007. Mickelson scored a double bogey on the 7th hole. (UPI Photo/Kevin Dietsch)

Tiger Woods reacts after missing a putt for birdie on the 16th green, during the second round of the 107th U.S. Open, at the Oakmont Country Club in Oakmont, Pennsylvania on June 15, 2007. (UPI Photo/Kevin Dietsch)

Massive crowds cross the 15th fairway as Spain's Jose Maria Olazabal gets ready to putt on the 15th green during the second round of the U.S. Open Championship at Oakmont Country Club in Oakmont, Pennsylvania just outside of Pittsburgh on June 15, 2007. Approximately 40,000 spectators will watch each day of the four-day tournament. (UPI Photo/Pat Benic)

Tiger Woods hits from a bunker onto the 8th green during the first round of the 107th U.S. Open at the Oakmont Country Club in Oakmont, Pennsylvania on June 14, 2007. Woods bogeyed the hole. (UPI Photo/Kevin Dietsch)