Early in the second set of her second-round match on Thursday night, a ball bounced just past Ons Jabeur’s reach, and she lost the point, throwing her arms up in exasperation. 5 seed, would probably have reached the ball in time to return it down the line, but she has been playing while sick. Jabeur, who reached the U.S. Open final last year, is among several players who have had to contend with an illness of some sort at this year’s tournament. Dominic Thiem of Austria retired in the second set of his second-round match, doubled over at the net with what appeared to be a stomach-related issue. Tennys Sandgren, who failed to advance out of the qualifiers, wrote on X, formerly known as Twitter, that he became ill after returning home from the tournament.

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Persons: Jabeur, Dominic Thiem, Austria, Emil Ruusuvuori, Tennys Sandgren Organizations: U.S