The US Open golf tournament is often called the “ultimate test” in championship golf and its goal is to crown the US champion. That got us thinking about viewing golf tournaments as a selection process. In a typical tournament, players play 4 rounds of golf. (There’s usually a cut after the second day where the field is reduced by half. This complicates the analysis below somewhat, but not enough to change the main point.) When all is said and done by Sunday afternoon, millions of dollars of prize money is distributed purely according to rank order from best to worst score.