Jason Kubler has a competitive career record of 29–35 across 64 matches (45.3%). The record shows a player capable of competing at Tour level, though there is clear room to push the win rate higher.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): Jason Kubler has struggled at Grand Slam level: 9–14 (39.1%) in 23 matches. The best-of-five format and elite fields make this the toughest benchmark on Tour.
ATP Masters 1000 (Indian Wells, Miami, Monte Carlo, Madrid, Rome, Canada, Cincinnati, Shanghai, Paris): Jason Kubler is 3–4 (42.9%) across 7 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the calendar.
By format — best-of-five: 9–14 (39.1%); best-of-three: 20–21 (48.8%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance.
Best season: 2023 — 13–15 (46.4%) from 28 matches. The best single-season display to date — a useful reference point as the career continues to develop.
Recent Form 2026: 1–1 (50.0%). Last 2: L W
