Tiger Woods has called an end to his 12-year partnership with Steve Williams, which resulted in the former world number one picking up 13 majors.
A statement on Woods' official website read: "I want to express my deepest gratitude to Stevie, but I think it's time for a change."
He also said Williams had been instrumental in his career and wished the caddy every success in the future.
It is thought that Williams will link up with Adam Scott, as he has caddied for the Australian in the last two majors.
Williams said the news came as a shock.
"Given the circumstances of the past 18 months, working through Tiger's scandal, a new coach and with it a major swing change and Tiger battling through injuries, I am very disappointed to end our very successful partnership at this time," he added.
Golf fans have not seen Tiger Woods on the final day of a tournament in his famous red Nike golf shirt since the Masters.