Andrew Novak and Ben Griffin shot a 1-under 71 in alternate-shot play Sunday to become first-time PGA Tour winners — by one stroke — at the Zurich Classic.

PGA Tour rookies Isaiah Salinda and Kevin Velo shot a 3-under 69 in alternate-shot play Friday to remain atop the leaderboard in the Zurich Classic, and leave defending champions Rory McIlroy and Shane Lowry six strokes back.

Rory McIlroy, playing for the first time since winning the Masters, teamed with Shane Lowry to shoot an 8-under 64 in better-play Thursday in the Zurich Classic, leaving the Irish defending champions six shots behind leaders Isaiah Salinda and Kevin Vetlo.

Brian Campbell played well enough to win the Mexico Open for his first PGA Tour victory.