Jason Jung leads 2 to 1 over 3 singles meetings since 2022. Last meeting on 09/06/2026 at Bratislava Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 09/06/2026 | Bratislava Challenger | Round 1 | clay | Kolar | 6-3 3-0 |
| 13/11/2023 | Kobe Challenger | Round 1 | indoor hard | Jung | 6-4 7-6(4) |
| 31/10/2022 | Yokohama Challenger | Round 1 | hard | Jung | 6-2 6-1 |
| clay | Jung 0 - 1 Kolar |
| indoor hard | Jung 1 - 0 Kolar |
| hard | Jung 1 - 0 Kolar |
| 2026 | Jung 0 - 1 Kolar |
| 2023 | Jung 1 - 0 Kolar |
| 2022 | Jung 1 - 0 Kolar |
88 wins, 91 losses since 2021 (49.2%).
Last matches: D V V V D
204 wins, 177 losses since 2021 (53.5%).
Last matches: D D D D D
Jason Jung leads 2 to 1 over 3 singles meetings since 2022.
On 09/06/2026, at Bratislava Challenger (Round 1): Zdenek Kolar won 6-3 3-0.