(Reuters) - Phil Mickelson, aiming to end a PGA Tour title drought of 31 months, relied on his magical short game to move two shots clear after the third round of the Pebble Beach National Pro-Am in California on Saturday. The American left-hander, chasing a record-equalling fifth victory in the pro-am event held on the picturesque Monterey Peninsula, fired a flawless six-under-par 66 on the Pebble Beach host course, one of three venues being used for this event. Mickelson broke clear of a congested leaderboard with three consecutive birdies on his back nine on the way to a 16-under total of 199, two ahead of Japan's Hiroshi Iwata, who carded a 69 at Spyglass Hill. More...