Phil Mickelson shoots an 11-under 60 to lead Phoenix Open . The U.S. Ryder Cup team is in the final stages of its preparations for next month's competition at Valhalla Golf Club in Louisville, Kentucky. ( CNN ) -- It is the second time Mickelson has shot 60 on the PGA Tour . Richard Sterne leads Dubai Desert Classic at halfway .
Phil Mickelson shoots an 11-under 60 to lead Phoenix Open . The U.S. Ryder Cup team is in the final stages of its preparations for next month's competition at Valhalla Golf Club in Louisville, Kentucky. It is the second time Mickelson has shot 60 on the PGA Tour . Richard Sterne leads Dubai Desert Classic at halfway .