Mickelson had marked his tee shot in the 16th fairway, leaving him 210 yards to the hole.
The Tour is trying to wrap up a second round stopped Friday afternoon because of a thunderstorm that set off tornado sirens. Officials hope to conclude the third round as scheduled later Saturday.
Brian Gay had the clubhouse lead after a 4-under 66. Robert Allenby has three holes to finish and was tied with Bryce Molder (63) two strokes back of Gay at 8 under.
John Daly is among those waiting to see if he will make the cut at even par in his first PGA Tour event since being suspended for six months.