HONOLULU -- Jerry Kelly, the 2002 Sony Open champion, withdrew after completing 11 holes Friday.
Kelly, who came into the week fighting lower-back pain, was 3-over-par in his second round and 7-over for the tournament when he stopped play. Although the Tour was unable to confirm his reason for quitting, it was believed to be his lower back.
Wilkinson was playing out of a ditch on the par-4 eighth hole Friday when his ball ricocheted off a rock embedded in the ditch and came back and struck him in a soft spot around his collarbone.
The lefthander, who shot a 7-over 77 in round one, was 1-under in his second round when he was struck by his own ball and withdrew for precautionary reasons. He was getting iced in the lockerroom.