He resumes from level par at 1.50pm.
It's the Offaly native's final tournament before next week's US Masters.
Padraig Harrington, who needs to win the tournament in order to gain entry into his 16th US Masters, tees off from 1 over par at 2.20pm.
Leader Charley Hoffman is 8 under par and gets his second round underway at 2.00pm.
