Nick Kyrgios (wrist) and Jan-Lennard Struff (hip) have withdrawn from the Western & Southern Open in Cincinnati and the US Open.

Kyrgios, who was a quarter-finalist last year at Flushing Meadows, has only competed in one event this year — in Stuttgart — due to injury. The Australian missed the entire start of the season after undergoing arthroscopic surgery on his left knee in January and missed Wimbledon due to a torn ligament in his wrist.

Kyrgios’ injury-plagued season comes following a standout year in 2022, when he reached the Wimbledon final and won the ATP 500 event in Washington D.C. The 28-year-old, who also partnered Thanasi Kokkinakis to win the 2022 Australian Open doubles crown, earned one of his biggest career wins last year in New York, taking out defending champion Daniil Medvedev in the fourth round.

The German Struff reached a career-high No. 21 in the Pepperstone ATP Rankings in June following two finalist appearances (Madrid, Stuttgart). Boasting a 16-10 season record, the 33-year-old last competed at the American major in 2021.

Argentines Diego Schwartzman and Facundo Diaz Acosta move into the US Open main draw.