Brian Stuard has taken a one-shot lead at the Sony Open in Hawaii after the second round of action.
The 31-year-old American hit a fourth straight round of 65 at the tournament to open up the advantage over Marc Leishman of Australia and Japan's Hideto Tanihara, finishing at 10-under 130.
"I think it's something to do with the greens," The AP quotes Stuard as saying.
"I feel comfortable on the greens. I feel like I read them pretty well and I'm able to make putts."
James Hahn made an albatross two on the par-five ninth hole in one of the highlights of the second round.
