Scott announced Monday that he will have Williams on his bag for his next four tournaments, beginning with the U.S. Open later this month. Williams will also caddie at the Open Championship, WGC-Bridgestone Invitational and PGA Championship.
Last week Scott said he ended his relationship with caddie Mike Kerr, whom he hired at the end of last year.
Scott and Williams last worked together at the FedEx Cup playoffs.
“Steve was adamant that he was not going to caddie in 2015, so he took some convincing, but I am very happy he’s agreed to help out,” Scott said in a release.