Alexander Vasilev and Zdenek Kolar will face off in the 1st round of the Sofia 1 Challenger for the 1st time in their career. They are scheduled to play on Tuesday at 10:00 am on CENTER COURT. Here the head to head stats and relative prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Zdenek Kolar who should win in 3 sets.
Zdenek Kolar -> 1.49
Alexander Vasilev -> 2.48
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Prediction and head to head Alexander Vasilev vs. Zdenek Kolar
There is no head to head record between Alexander Vasilev and Zdenek Kolar since this will be the first time that they will play each other in the main tour.
Alexander Vasilev
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 8-5 | 1-1 | 7-4 | 0-0 | 0-0 | 0-0 |
| 2024 | 4-4 | 1-1 | 3-3 | 0-0 | 0-0 | 0-0 |
| 2023 | 2-2 | 0-0 | 2-2 | 0-0 | 0-0 | 0-0 |
Currently unranked, the Bulgarian will start his run in the Sofia 1 Challenger after he played his last match in M15 Sofia where he lost 7-5 6-0 to Faurel in the final on the 10th of August.
Vasilev has a composed 4-2 win-loss record in 2025, 4-2 on clay (See FULL STATS).
Alexander’s best result of the current season was getting to the final in M15 Sofia.
Talking about his overall career, Vasilev has an overall 10-8 record. He has a positive 9-7 record on clay.
Previously in the Sofia 1 Challenger
The Bulgarian has never competed in this tournament before.
Zdenek Kolar
38 - 20win/loss
222
111
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 64-30 | 3-2 | 61-28 | 0-0 | 0-0 | 0-0 |
| 2024 | 28-23 | 1-2 | 11-12 | 16-9 | 0-0 | 0-0 |
| 2023 | 34-35 | 6-8 | 19-19 | 9-7 | 0-1 | 0-0 |
| 2022 | 23-36 | 1-6 | 17-24 | 3-3 | 2-2 | 0-1 |
| 2021 | 41-32 | 1-4 | 34-19 | 5-8 | 1-1 | 0-0 |
Ranked no. 382, Zdenek will start his run in the Sofia 1 Challenger after he played his last match in the Cordenons Challenger where he lost 7-5 7-5 to Piros in the 1st round on the 5th of August.
Zdenek has an aggregate 38-20 win-loss record in 2025, 35-18 on clay (See FULL STATS).
Zdenek’s best result of the year was reaching the final in M25 Antalya and M15 Grodzisk Mazowiecki.
In terms of his career, Zdenek has an overall 369-294 record. He has a positive 257-180 record on clay.
Tennis Scores in Sofia 1 Challenger
- Aryan ShahShah – Alexander DonskiDonski (5-7 6-4 6-4) – Stats, scores, rankings
- Mika BrunoldBrunold – Oleg PrihodkoPrihodko (6-4 6-4) – Stats, scores, rankings
- Duje AjdukovicAjdukovic – Naoya HondaHonda (2-6 6-4 6-4) – Stats, scores, rankings
- Sandro KoppKopp – Andrej NedicNedic (7-5 6-1) – Stats, scores, rankings
- Milos KarolKarol – Lautaro MidonMidon (6-1 6-3) – Stats, scores, rankings
Upcoming matches in the draw
- Denis YevseyevYevseyev – Bernabe Zapata MirallesZapata Miralles (0-0) – H2H and prediction
- Jelle SelsSels – (0-2) – H2H and prediction
- Nerman FaticFatic – (0-0) – H2H and prediction
- Murkel Alejandro Dellien VelascoAlejandro Dellien Velasco – (0-0) – H2H and prediction
- Zdenek KolarKolar – (0-0) – H2H and prediction
- Nikolas Sanchez-IzquierdoSanchez-Izquierdo – (0-0) – H2H and prediction
- Sandro KoppKopp – (1-1) – H2H and prediction
- Filip Cristian JianuCristian Jianu – (1-0) – H2H and prediction
- Franco RoncadelliRoncadelli – Sebastian GimaGima (0-0) – H2H and prediction