Defending champion Dustin Johnson and fellow American Paul Goydos are set for a final round showdown at the Pebble Beach National Pro-Am after shooting a pair of 64s Saturday to charge four strokes clear. Johnson, who won last year's tournament by default after the fourth round was washed out by heavy rains, tore up the front nine of the Spyglass Hill course in his eight-under par third round, but was matched by Goydos, who shot a sparkling bogey-free round on the Pebble Beach Golf Links. The Americans, part of a six-way tie for the lead overnight, marched to an 18-under total of 196 to emerge four clear of fellow overnight leaders, Americans Bryce Molder and J.B. Holmes, and Matt Jones of Australia. Johnson, who has led or held a share of the lead over the course of the tournament, drained a 20-foot putt to eagle the first then notched four birdies in five holes from the third to reach the turn at 30, matching Phil Mickelson's mark in 2005. “You know, that's key for me, getting off to a good start,” Johnson told reporters. His hopes of equaling the 62 course record shared by Britain's Luke Donald and Mickelson were dashed, however, with a bogey on the last. Johnson is bidding for his third title and to become the first back-to-back winner at Pebble Beach since American Mark O'Meara in 1989-90. In contrast to Johnson's fireworks, Goydos was all control, turning in a bogey-free round highlighted by an eagle on the par-five second where he holed an eight-foot putt after reaching the green in two. Driving on average nearly 50 yards shorter than Johnson, Goydos notched six birdies in addition to his eagle to give himself every chance of notching his third tour win in a 17
