Jannik Sinner projected to capture more than 20 Grand Slam titles

Legendary coach Rick Macci has forecast that Italian world No. 1 Jannik Sinner could amass over 20 Grand Slam victories. The prediction follows Sinner’s recent fifth major win at Wimbledon, his back‑to‑back Australian Open titles, and a US Open triumph, bringing his career total to five majors.

Macci highlighted Sinner’s dominant 2026 season, including a 34‑match Masters 1000 winning streak and a 29‑0 record at that level, as evidence of his long‑term potential. He also defended Sinner’s decision to skip the Canadian Open in order to rest for the season‑ending US Open, emphasizing the importance of player health over a packed schedule.