By the time he teed off as part of the afternoon wave, Tiger was already looking up at early clubhouse leader Roberto Castro, who tied the course record with a 63.
That dropped Mickelson back to even - par, and when an overcooked 8 - iron on the par - 3 ninth led to a three, he exited the course with a level 70 and two shots back of early clubhouse leaders Na and McDowell.