In the semifinals, Kudermetova and Mertens lost to a pair of Lyudmila Kichenok - Elena Ostapenko (Ukraine - Latvia) with a score of 6:4, 6:7, 5:10.
The match lasted 1 hour 50 minutes.
In the final of the tournament, Kichenok and Ostapenko will meet with Nicole Melichar (USA) - Ellen Perez (Australia).
Earlier, Medvedev made it to the semifinals of the tennis tournament in Cincinnati.