Angelique Kerber announced that she is changing coaches, and will now be working with Wim Fissette.

The German, who began the season at No. 1 but is now ranked No. 21, was previously coached by Torben Beltz, who worked with her for multiple periods in her career.

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Kerber won just one of five matches to finish the season. Fissette had been coaching Johanna Konta, and has previously worked with Simona Halep and Kim Clijsters.

Kerber, a two-time Grand Slam champion, has won 10 career titles.