Russian Daria Kasatkina has stopped working with coach Vladimir Platenik, who helped her get into the top 25 in the rankings.

The 20-year-old worked with the Slovakian coach for three years, winning her first tour title this year in Charleston, S.C., over Jelena Ostapenko.

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Kasatkina will stay with the Empire Tennis Academy in Slovakia, where her former coach is also based.

The decision was by "mutual agreement," according to the academy. (http://empire-tennis-academy.com/blog/vladimir-platenik-and-daria-kasatkina-finished-agreement)

Kasatkina, ranked No. 31, has not announced a new coach.