Macci warns Sinner: Listen to your body or risk becoming a cautionary tale

On September 23, Rick Macci — the coach who built the foundations for Serena and Venus Williams, and later guided Andy Roddick, Jennifer Capriati, and Maria Sharapova to greatness — posted a simple message on social media: "Sinner needs to rest and should not return until he feels 100% physically ready. He has a long journey ahead, but must learn to listen to his body, otherwise he will become a 'cautionary tale'." The phrase "cautionary tale" — Macci's metaphor for the risk of a talent being left behind by pushing too hard — stopped the tennis world in its tracks. Jannik Sinner has been absent since winning Wimbledon in July, withdrawing from the Canadian Open, Cincinnati Open, and US Open. His right knee injury represents the longest layoff of his professional career since breaking into the top 10. Before the injury, Sinner had compiled a stunning 44 wins from 47 matches with six titles, including the Sunshine Double at Indian Wells and Miami, Monte Carlo Masters, and Wimbledon. Macci acknowledged Sinner and his team are experienced enough to determine the right return time, but emphasized that competitive hunger should not override the body's warning signals. Sinner is expected to return at the China Open in Beijing on September 30, the start of a crucial late-season stretch that includes Shanghai Masters, Paris Masters, and ATP Finals — tournaments that will determine who finishes the year as world number one.