Luss, Scotland:Gregory Havret and Jose Manuel Lara shared a one-stroke lead over Phil Mickelson on Friday, while Colin Montgomerie missed the halfway cut in the Scottish Open.
Havret birdied five holes on the back nine for a 64 while Lara had an eagle and two birdies on his last six holes for a 65. They had totals of 132, 10 under par.
Mickelson said he was lucky to shoot a 68, because "I wasn't hitting it where I wanted to."
Montgomerie, who won the European Open on Sunday, shot a 3-over 74, missing the cut the week before the British Open for the first time in his career.
"I just didn't putt well today," Montgomerie said. "I hit 27 out of 28 fairways (over two days). That proves it's a putting competition and I just didn't putt well.
"There's nothing wrong with my game. I just don't get the ball in the hole the way I should."
Montgomerie said he would go home to London for the weekend before heading to the British Open at Carnoustie on Tuesday.
Mickelson finished his round in heavy rain but felt he had missed a chance earlier to post a better score.
"I didn't feel all that great today," he said. "I was fighting it on the tee and fighting it with the putter but I got away with a couple of bad shots that stayed in play.
"My misses were somewhat controlled but there were a few shots on the back nine where I let it slide and I got away with it," he said.
He did not have a bogey on the back nine. His only bogey came earlier, at the long 6th.
Mickelson had shared the first-round lead with Graeme Storm, Soren Hansen and Lee Westwood, who shot 72, 73 and 74 respectively Friday.