Number of times in the past 35 weeks that the No. 1 spot in the Official World Golf Ranking has changed hands. England’s Justin Rose replaced American Brooks Koepka at the top, despite Rose having not played last week while Koepka finished 24th at the elite 33-man Sentry Tournament of Champions. This is Rose’s fourth time atop the OWGR since Sept. 10 and third in the past 10 weeks. The world ranking awards points based on players’ results and strength of schedule in a two-year window.