The Norwegian was 133rd in final-round scoring for the season, but made history with a come-from-behind win.
Hovland made 10 birdies and one bogey for a course-record 61 – including a 7-under-par 28 on the back nine – and a come-from-behind, two-shot victory over Scottie Scheffler (66) and Matt Fitpatrick (66) at the BMW Championship at Olympia Fields.