Jim Furyk broke a four-and-a-half-year winless drought on Sunday and that helped him move back to No. 5 in the world rankings.
Furyk, whose last win was at the 2010 Tour Championship, improved five spots thanks to his 17th PGA Tour title.
Ahead of him, the top-4 were unchanged with Rory McIlroy followed by Masters champion Jordan Spieth, Henrik Stenson and Bubba Watson.
With Furyk's 5-spot jump, Jason Day, Dustin Johnson, Adam Scott, Justin Rose and Sergio Garcia all fell one spot and are Nos. 6-10.
Jimmy Walker, J.B. Holmes and Rickie Fowler held steady in the 11th through 13th positions. Matt Kuchar, who finished fifth at Harbour Town, improved three spots to No. 14 this week.
Kuchar's move pushed Patrick Reed, Hideki Matsuyama and Martin Kaymer down one notch apiece. They are 15, 16 and 17 in the new rankings. Phil Mickelson held steady at No. 18 and was followed again by Billy Horschel and Brooks Koepka.