Every one of the last nine winners of the Wanamaker Trophy was American-born. This is the longest such streak at the PGA of America's major since a 10-year run from 1980 through 1989. The last non-American to win this title was Australian Jason Day in 2015 at Whistling Straits.

The PGA Championship was first played in 1916 and was a match-play event for the first 42 years of its existence. It's been played every year except when it paused for 1917, 1918 and 1919 for World World I and 1943 due to World War II. In 1958 it changed to stroke play with Dow Finsterwald the first winner after the format changed.

Masters champion Rory McIlroy and world No. 1 Scottie Scheffler will be playing together in the opening two rounds of the PGA Championship, joined by defending champion Xander Schauffele in another group of the top three players in the world.