USA's Zach Johnson reacts after making a birdie putt on the first hole during a four-ball match at the Ryder Cup PGA golf tournament Saturday, Sept. 29, 2012, at the Medinah Country Club in Medinah, Ill.

USA's Zach Johnson reacts after making a birdie putt on the first hole during a four-ball match at the Ryder Cup PGA golf tournament Saturday, Sept. 29, 2012, at the Medinah Country Club in Medinah, Ill.