Hitting the hard courts: The best photos from San Jose and Washington DC
All the action on and off the court during the US Open Series.
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Maria Sakkari smiles in practice (Jimmie48/WTA)
02
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Ajla Tomljanovic says hello in San Jose (Jimmie48/WTA)
03
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Elina Svitolina keeps her eye on the ball in San Jose (Jimmie48/WTA)
04
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Andrea Petkovic practices her serve in San Jose (Jimmie48/WTA)
05
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Donna Vekic makes a new friend at the Humane Society of Silicon Valley (Jimmie48/WTA)
06
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High-fives for Peng Shuai and Bethanie Mattek-Sands (Jimmie48/WTA)
07
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Marie Bouzkova pumps her fist in San Jose (Jimmie48/WTA)
08
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Coco Vandeweghe on the move in San Jose (Jimmie48/WTA)
09
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Daria Kasatkina knocked out defending champion Mihaela Buzarnescu in the San Jose first round (Jimmie48/WTA)
10
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Coco Gauff gives the thumbs-up in Washington (Getty)
11
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Madison Keys smiles in practice with her friend Sloane Stephens (tournament)
12
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Jessica Pegula scored an impressive win at the Citi Open on Wednesday as she overcame Iga Swiatek. (Citi Open)
13
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Coco Gauff might be out of the singles in the US capital, but she and partner Catherine McNally rolled into the semifinals of the doubles. (Citi Open)
14
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Victoria Azarenka enjoys cake to celebrate her 30th birthday. (Jimmie48/WTA)
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In San Jose on Wednesday, Maria Sakkari had to come from behind to defeat Mayo Hibi, 4-6, 6-4, 6-2. (Jimmie48/WTA)
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There was also success for Elina Svitolina, who overcame Daria Kasatkina, 6-3, 6-1. (Jimmie48/WTA)
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Carla Suárez Navarro stopped the run of Bethanie Mattek Sands, who had beaten Venus Williams a day earlier. (Jimmie48/WTA)