World No. 4 Simona Halep has parted ways with her coach, Wim Fissette. The Romanian hired Fissette in January, and had a breakout year that included reaching the Roland Garros final, notching her first win over a world No. 1 and reaching the title match of the WTA Finals in Singapore.

Also: American Oudin Undergoes Heart Surgery

“My collaboration with Wim Fissette will come to an end, following a mutual agreement,” Halep wrote on her Facebook page. “It was a good and beautiful year. I want to thank him and wish him good luck in the future.”

The 23-year-old rose to a career-high No. 2 in the rankings this August.