PRAGUE • Two-time Major champion Petra Kvitova of the Czech Republic said on Tuesday she had parted ways with Frantisek Cermak after the US Open, the second coach she has sacked this year.

Kvitova, 26, who won a singles bronze medal at the Rio Olympics, is 16th in the world rankings. She said that she agreed with Cermak to end their cooperation after returning from New York.

"After coming back from America, we have agreed with Frantisek Cermak to end our cooperation," the Czech said in a press release.

"For now I will train without a coach like at the beginning of the season, but of course that's not the final state of things," added the 2011 and 2014 Wimbledon winner.

Kvitova, who reached a career-high world No. 2 ranking in 2011, had earlier sacked coach David Kotyza in January after seven years, following her second-round defeat at the Australian Open.

She spent almost three months without a coach before hiring Cermak, who took over in mid-April. But Cermak was quick to go as Kvitova bowed out of the US Open after a straight-sets loss to Germany's Angelique Kerber in the last 16 on Monday.

AGENCE FRANCE-PRESSE, XINHUA