James Hahn outlasted Dustin Johnson and Paul Casey in a playoff to win the Northern Trust Open on Sunday, moving him up to No. 86 in the world rankings, while Johnson vaulted six spots to No. 15 this week.
Hahn, who birdied the third playoff hole to beat Johnson, jumped 211 spots from 297 to 86. Johnson was No. 21 before breaking back into the top 20. Casey, who was eliminated on the second playoff hole, improved 20 spots to No. 65 this week.
While he was not in action last week, Rory McIlroy remained in firm control of the No. 1 ranking. Bubba Watson, the 2014 Northern Trust Open winner, tied for 14th this year and that was good enough to move him up one to No. 2. Henrik Stenson dropped a spot to No. 3.
Australians Jason Day and Adam Scott stayed put at Nos. 4 and 5, while Sergio Garcia and Jim Furyk swapped spots, with Garcia improving to six and Furyk falling one to seven. Justin Rose and Jordan Spieth remained Nos. 8 and 9.
Martin Kaymer and Matt Kuchar traded places as Kaymer jumped one to 10. Following Kuchar at 11, Rickie Fowler, Jimmy Walker and Hideki Matsuyama stayed put from No. 12.
With Johnson improving six spots to 15, Patrick Reed, Victor Dubuisson, Billy Horschel, Phil Mickelson, Brooks Koepka and Graeme McDowell each fell one spot. They are now Nos. 16-21, respectively.
Anirban Lahiri won his second European Tour tournament in three weeks at the Hero Indian Open on Sunday. He vaulted five spots from 39 to 34 in the rankings.