Prague, Sept 6 (CTK) – Czech tennis player Petra Kvitova, 26, Wimbledon winner and a bronze medallist from the 2016 Rio Olympics, ended cooperation with coach Frantisek Cermak after her return from the US Open tournament, she said in a press release on Tuesday.

“After returning from America, we agreed with Cermak to end our cooperation,” Kvitova, currently 16th in the WTA rankings, said in the press release.

Former doubles player Frantisek Cermak, 39, has worked as Kvitova’s coach since mid-April. He was her sparring partner in March.

Kvitova terminated cooperation with coach David Kotyza after more than seven years in January, following her failure at Australian Open. Cermak replaced him.

“So far I will be training alone as at the beginning of the season, but this is naturally not the final solution,” she said.

After five years, Kvitova was replaced in the position of the best Czech female tennis player by Karolina Pliskova.