DUBLIN, Ohio — Scott Stallings made one of only four birdies on the 18th hole at Muirfield Village for a 6-under 66 and a one-stroke lead in the Memorial.

Considering everything else that went on Thursday, that was barely worth noting.

One shot behind was Erik Compton, whose second heart transplant came from a donor in Ohio. Rory McIlroy made a quadruple bogey on his third hole and wondered if he was headed for another missed cut. He made a strong recovery for a 71. Tiger Woods, in the midst of his worst stretch as a pro, overcame a double bogey on the 18th for a 70.

The biggest surprise was Phil Mickelson. He shot a 79, then withdrew saying he was fatigued and needed rest before the U.S. Open.