From 1995 to 1997 Lehman held the 54-hole lead at the U.S. Open, but each time failed to win. During this period he won his only major championship to date, The Open Championship in 1996. In April 1997, he was Number 1 in the Official World Golf Ranking for what would be only one week. He has won five times on the PGA Tour, but in addition to his Open win these wins have included the season-ending Tour Championship and Memorial Tournament, and he has won at least nineteen professional events in total.