Dustin Johnson hits from the 18th tee of the Spyglass Hill Golf Course during the second round of the AT&T Pebble Beach National Pro-Am PGA Tour golf tournament in Pebble Beach, Calif., Friday, Feb. 10, 2012.

Dustin Johnson hits from the 18th tee of the Spyglass Hill Golf Course during the second round of the AT&T Pebble Beach National Pro-Am PGA Tour golf tournament in Pebble Beach, Calif., Friday, Feb. 10, 2012.