(Reuters) - Spain's Jon Rahm kept up his impressive professional debut by posting a four-under-par 67 to share a three-shot, second-round lead with local favorite Billy Hurley III at the Quicken Loans National on Friday. Overnight leader Rahm, the former Arizona State golfer who was the low amateur at last week's U.S. Open at Oakmont, held sole possession of the lead before missing a four-foot par putt at the last in Bethesda, Maryland. Hurley, a U.S. Naval Academy graduate who calls nearby Annapolis his home, fired a six-under 65 to join playing partner Rahm on 11-under-par 131 at Congressional. More...