Overview
- Jannik Sinner announced he would not play the US Open after on‑court testing showed his right knee still needed more time to recover, a decision made public on August 21.
- Latest media reports identify the issue as extra‑articular tendinous inflammation, which affects tissues around the knee rather than the joint itself.
- Sources report no major damage to meniscus, cartilage or major ligaments, so his team is pursuing non‑surgical rehabilitation including targeted therapies at JMedical in Turin.
- The medical plan aims for a phased return to full practice by late September with a likely competitive comeback during the Asian hard‑court swing, and Sinner’s large points lead means his ATP No. 1 ranking is not immediately at risk.
- The withdrawal highlights how cumulative wear, heat episodes earlier this season, and the packed tour calendar can force load‑management choices and could influence discussions about scheduling and player care.