The world no.1 is aiming to become the first man since 1905 to win three consecutive US Open titles.
Koepka, Johnson, McIlroy and Woods head the betting for the 2019 PGA Championship at Bethpage.
The best of the best head to Missouri this week as we suss out the top picks for PGA Championship.
CupsBetting takes a look at the last major golfing tournament of 2016. Can Sergio Garcia finally break his major drought? We look at the best odds and give tips.