The 1965 U.S. Open was the 65th time the tournament was played. It was decided in an 18-hole playoff.
Winner: Gary Player, 282
Where it was played: Bellerive Country Club in St. Louis, Missouri
Tournament dates: June 17-21, 1965
Leader after first round: Kel Nagle, 68
Leader after second round: Gary Player, 140
Leader after third round: Gary Player, 201
Notable Notes: South African Gary Player and Australian Kel Nagle tied at 282 and played an 18-hole playoff. Player dominated the playoff, taking a 5-stroke lead after just eight holes before winning 71 to 74. Afterward, Player donated his entire winner's check to cancer research and junior golf programs.