Rafael Nadal pulled out of the U.S. Open on Wednesday, making it the third Grand Slam tournament he's missed this season and raising more questions about his future in tennis at age 38. Nadal wrote on social media that he will miss “those electric and special night sessions” in Arthur Ashe Stadium, “but I don’t think I would be able to give my 100% this time.” Nadal teamed with Roger Federer in a doubles match at that event in 2022, when Federer played for the final time before his retirement.