United States making it interesting. Could come down to the last match - Mahan-Mcdowell. Mahan down 2 with about 6 holes to go. Overton was down 2 at the turn but won 5 of 7 holes to win 3 and 2. Mickelson 4 up with 4 to play. Woods putting for his win on the 15th. Tiger drills his putt on the 15th to win.