And the 18th hole at Augusta National strikes again. On Thursday, it was Henrik Stenson heading to 18 with the lead, only to quadruple bogey the hole -- a snowman -- to fall well off the pace. On Friday, Lee Westwood was the victim, surrendering a lead he's managed to hold for the better part of the last two days.
Westwood found trouble on his approach, leaving it short and left of the green. It was a shot that had no chance, despite his relatively good position off the tee. A poor pitch left Westwood with work to do, and a missed bogey putt left him to clean up for double-bogey.
With the double, Westwood went from leading the tournament to trailing by a stroke. At 5-under, a group of four -- Fred Couples, Rory McIlroy, Sergio Garcia and Jason Dufner -- are now leading The Masters. Dufner is in the clubhouse at 5-under, Couples is at that number through 17, and McIlroy and Garcia still have some work to do out on the course.
Westwood is in a tie for fifth with Louis Oosthuizen, each at 4-under and in the clubhouse.
You can view the live Masters leaderboard here.