Graeme McDowell will take at least a one-shot lead into the most difficult hole on the course this week, the par-3 17th -- the hole that has been the source of so much drama at previous U.S. Opens at Pebble Beach.

McDowell is at 1 under, one stroke ahead of Gregory Havret, whose tee shot at the 17th found the bunker. At this point, it's a two-man race.

UPDATE: Make that a two-shot lead for McDowell. Havret just bogeyed the 17th -- his first bogey on the back nine.