Phil Mickelson(-6)

Runner-up: Brooks Koepka

Phil Mickelson, at age 50 years and 11 months, became the oldest major champion in history at the Ocean Course on Kiawah Island. Mickelson, who had gone six years without winning on the PGA Tour, led from the start and held off Brooks Koepka by two shots. The victory was one of the most celebrated in golf history, with fans worldwide delighted to see Mickelson achieve the feat.