Northern Ireland's Rory McIlroy entered the year ranked No. 1 in the Official World Golf Ranking.
You could certainly argue, over the past few weeks, that Spain's Jon Rahm was performing like the best player in the world.
On Sunday, Scottie Scheffler reminded everyone in the sport who was ranked No. 1 for much of last season, when he won four times, including his first major championship at the Masters.
Scheffler, who entered the week ranked No. 2 in the world, will regain the top spot after becoming the seventh player to repeat as champion of the WM Phoenix Open, an event he claimed last year for his first PGA Tour victory.