Rafael Nadal has pulled out of the U.S. Open. He announced his withdrawal via social media on Wednesday. It is the third Grand Slam tournament he’s missed this season and raises more questions about his future in tennis at age 38. He has won four of his 22 major championships at Flushing Meadows, most recently in 2019. The draw for the year’s last Grand Slam tournament is scheduled for Aug. 22 and play is set to begin Aug. 26. Nadal has not announced anything about a possible retirement, but his age and a recent history of injuries suggest he might not play much longer. He says the Laver Cup in September will be his next event.