"Sergio Garcia and Masters champion Charl Schwartzel were also at 3 under with one hole left to play at Congressional.Another shot back was a group of five, including British Open champion Louis Oosthuizen and American Ryan Palmer.With only a handful of players left on the course, McIlroy, who let a four-shot lead slip away on the last day of the Masters in April, was all but assured of holding the" . . . .