American Tennys Sandgren was moved into the main draw for the tournament when Japan’s Yoshihito Nishioka withdrew to continue his recovery from a knee injury.
The U.S. Tennis Association made the announcement Monday.
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Nishioka was injured in March while playing in the Miami Open.
Sandgren, ranked No. 106, will be making his U.S. Open main-draw debut. The 26-year-old Tennessee native lost in the first round of the French Open in what was his first appearance in the main draw of a Grand Slam.
Sandgren’s parents gave him his great-grandfather’s first name.