Willett did not play frequently enough on Tour last year to retain his card, so he will only be eligible for certain tournaments despite winning the Masters in 2016. That is the last tournament the Englishman has won, as he has been beset by back woes and what appears to be a Masters hangover. Willett was 224th in points across 11 events, making the cut only five times with two WDs and zero top-25s. He'll still be in all the majors, the only guy on this list who can say that. But by having fallen from 11th in the OWGR at the beginning of 2017 to outside the top-60 now, he'll have to play his way into WGCs. Keep an eye out. There are still a bunch of European Tour events left this season. One good finish at some fall season event worldwide could vault him into the top-50 OWGR. For instance, last season, Willett had two top-6s in Asia late in 2016 before his game completely fell apart.