Justin Thomas wins the Tournament of Champions on Maui, the annual first event of the calendar year, for the second time in four years. At 26 he becomes the fourth youngest golfer since WWII to win 12 PGA events, one more than Jordan Spieth. Of the potential young "Big Four" of a few years ago, Thomas has been the most consistent. McIlroy has been up and down but had a big year last year (edging out Brooks Koepka for player of the year). Day and Spieth have struggled and have been passed up in the world rankings by Xander Schauffele, 26, who is now 8th. Thomas is 4th, McIlroy 2nd, and 29 year old Koepka is number one.