The U.S. Open remains the only major Mickelson , 45 , has yet to win .
Phil Mickelson wrapped up his final round with a three - over 73 to finish at 13 over for the weekend .
The U.S. Open remains the only major Phil Mickelson , 45 , has yet to win .
Phil Mickelson wrapped up his final round with a three - over 73 to finish at 13 over for the weekend .