Fellow Kiwi Danny Lee is likely to miss the cut, with his second round two-over par 74 seeing him slip to three-over for the tournament and into a tie for 110th.
American Dustin Johnson leads the tournament at 10-under, having five holes to play in his second round, while England's Danny Willett sits in the clubhouse at nine-under.
The players still needing to finish their second rounds are expected to get underway at 6.00pm.
Meanwhile, on the PGA Tour, two back-nine birdies has seen Steven Alker make the cut on the number at the Barbasol Championship, while Tim Wilkinson has missed the cut by two strokes.