The U.S. Open is the only one of the four major championships which retains a full 18-hole playoff the following day (Monday). If a tie exists after that fifth round, then the playoff continues as sudden-death on the 91st hole. The U.S. Open has advanced to sudden-death three times (1990, 1994, 2008), most recently when Tiger Woods defeated Rocco Mediate on the first additional playoff hole in 2008. Before sudden-death was introduced in the 1950s, additional 18-hole rounds were played (1925, 1939, and 1946) to break the tie. When the playoff was scheduled for 36 holes and ended in a tie, as in 1931, a second 36-hole playoff was required.
Willie Anderson, Bobby Jones, Ben Hogan and Jack Nicklaus hold the record for the most U.S. Open victories, with four victories each. Hale Irwin is the oldest winner of the U.S. Open at 45 years and 15 days in 1990. The youngest winner of the U.S. Open is John McDermott at 19 years, 10 months and 14 days in 1911.