Though Oosthuizen has one major title under his belt — the 2010 Open Championship at the Old Course at St. Andrews, which he won by a whopping seven strokes — he has been a runner-up an incredible seven times, and even third once, at the 2020 U.S. Open.

Has an amatuer ever won a major tournament?

Amateur Johnny Goodman outlasted Ralph Guldahl by a single stroke to win his only major championship. Goodman's victory 88 years ago was the eighth and most recent by an amateur at the U.S. Open; Bobby Jones won four, the last in 1930 was part of his grand slam.

Has Brooks Koepka won a major?

Koepka currently has four major titles to his name: the 2017 and 2018 US Open and the 2018 and 2019 PGA Championship.