Players feeling mental toll of life inside US Open’s double bubble

Adrian Mannarino and Kristina Mladenovic both played and won their U.S. Open first-round matches Monday afternoon. Then it was back to their incredibly strict “bubble within a bubble.” Mannarino and Mladenovic are among the players who were found to have been in close contact with Benoit Paire, the Frenchman who on Sunday tested positive for...

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