World No. 4 Collin Morikawa has split with longtime caddie J.J. Jakovac and reportedly has hired Joe Greiner to replace him.
Jakovac confirmed the news of his exit in a text message to Golfweek on Tuesday. It was first reported by SiriusXM PGA Tour Radio.
Jakovac had been Morikawa's only caddie since he turned professional in 2019. They've won six times on the PGA Tour, including two majors.
The hire of Greiner, which also was first reported by SiriusXM PGA Tour Radio, caps a whirlwind few weeks for the veteran caddie.
He chose to part ways with close friend Max Homa in early April.