Level, 1 wins each over 2 singles meetings since 2022. Last meeting on 22/11/2025 at Sydney Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 22/11/2025 | Sydney Challenger | Semi-final | hard | Duckworth | 7-5 6-2 |
| 15/07/2022 | Hall of Fame Open - Newport | Quarter-final | grass | Kubler | 7-5 7-6(3) |
| hard | Duckworth 1 - 0 Kubler |
| grass | Duckworth 0 - 1 Kubler |
| 2025 | Duckworth 1 - 0 Kubler |
| 2022 | Duckworth 0 - 1 Kubler |
215 wins, 161 losses since 2021 (57.2%).
Last matches: D D D V D
152 wins, 78 losses since 2021 (66.1%).
Last matches: D V V V V
Level, 1 wins each over 2 singles meetings since 2022.
On 22/11/2025, at Sydney Challenger (Semi-final): James Duckworth won 7-5 6-2.