(AP Photo/Alastair Grant)

TOKYO (AP) French Open finalist Anastasia Pavlyuchenkova grasped for an air tube during a medical timeout and grew frustrated at the lack of ice in a court-side container.

German player Mona Barthel struggled with 10 double-faults in a loss to Iga Swiatek as a blinding sun made it nearly impossible to see the ball once she tossed it.

Heat and humidity quickly became a major issue when the Olympic tennis tournament opened Saturday. The temperature soared to 93 degrees F (34 degrees C) and the heat index made it feel more than 100 F (38 C).

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