The big-hitting American dislocated his ankle celebrating a hole-in-one during the par-three contest on Wednesday, before seemingly popping it back in himself.
Having been cleared to tee off, Finau made an inauspicious start with a bogey at the first but birdies at the second, fourth, eighth, ninth and 13th holes lifted him to four under par with five holes to play.
Charley Hoffman, who was leading by four strokes after the completion of round one 12 months ago, and Adam Hadwin each bogeyed the last to finish at three under par for their round.
