NEW YORK — No. 7-seeded Madison Keys retired at the U.S. Open in the second set of her third-round match against Alize Cornet, who was leading 7-6 (4), 3-2.
Keys required treatment from a trainer on her upper back and neck after the first set. She was the Open runner-up to Sloane Stephens in an all-American final in 2017.
Cornet is making her 57th Grand Slam appearance, and her 54th in a row. With one more win, she’ll reach the quarterfinals of a major event for the first time.