Tiger Woods and Phil Mickelson were set to miss the cut as U.S. Open champion Webb Simpson moved one stroke clear in Friday's second round of the weather-delayed Greenbrier Classic.

Woods, struggled with distance control in his approach play on the way to a one-under-par 69.

The 14-times major champion needed to ace the par-three last to ensure he advanced to the weekend but missed the cut when he carded an even-par total of 140.

Another big name who failed to progress was Phil Mickelson, who carded a second successive 71 to finish three strokes outside the projected cutline.

Meanwhile, Simpson carded a flawless four-birdie 66 to take control of the tournament with a nine-under total of 131 after 36 holes.

The 26-year-old, who clinched his first major title by one shot in last month's U.S. Open at the Olympic Club, knocked in a six-foot birdie putt on the 18th green to snatch the outright lead.