Five-time Major champion Phil Mickelson has ended an eight-year partnership after splitting with coach Butch Harmon.

The 2013 British Open at Muirfield was Lefty’s most recent win, with his last US victory at the Waste Management Phoenix Open in the same year.

Though he is still ranked No.25 in the Official World Golf Rankings, Mickelson has gone through a rough patch by his standards and has decided to part with the Las Vegas-based Harmon.

“I’ve learned a great deal from him in our eight years together,” Mickelson said in a statement to “It’s just that at the moment I need to hear new ideas from a different perspective.

“Butch is one of the great teachers in the history of the game and I believe he deserves to be in the World Golf Hall of Fame.”

World-renowned swing coach Harmon said he “thoroughly enjoyed working with Phil and we’ve had great success together.

“Helping him win the Open Championship in 2013 was one of the pinnacles of my career,” Harmon said in a statement through Mickelson’s representatives, according to a report. “I see nothing wrong with him seeking advice from another source. We’re great friends and always will be.”