In the first week of the new year, Brooks Koepka played tournament golf while Justin Rose stayed home. As it turned out, that was all it took to reverse the top two spots in the Official World Golf Ranking.
Koepka ended the year ranked No. 1 in the world, but he needed a top-8 finish at the Sentry Tournament of Champions to maintain that standing. Instead he finished alone in 24th among the 33-man field at Kapalua, meaning that Rose returns to No. 1 without having to hit a competitive shot.
The next three spots remain unchanged after the first event of 2019: Dustin Johnson at No.