In the 1/8 finals match, the Russian-American duet defeated Canadians Rebecca Marino and Carol Zhao with a score of 6:2, 6:4.
The duration of the match was 56 minutes.
In the quarterfinals, Samsonova and Kenin will play with the Americans Corey Gauff and Jessica Pegula.
Earlier, Daria Kasatkina started with a victory at the tennis tournament in San Diego.