Zdenek Kolar and Stefan Adrian Andreescu will fight against each other in the 2nd round of the Sofia 1 Challenger for the 2nd time in their career. They are scheduled to play on Wednesday at 3:30 pm on COURT 3. In the following lines you can find the head to head analysis and prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Zdenek Kolar who should win in 2 sets.
Zdenek Kolar -> 1.25
Stefan Adrian Andreescu -> 3.64
Click here to see the updated quotes and live streaming (only selected countries - USA excluded).
Here where top tennis events are broadcasted or streamed online (ATP, WTA).
At the challenger level, there will be free live streaming on Challenger TV.
Prediction and head to head Zdenek Kolar vs. Stefan Adrian Andreescu
This will be the 2nd time that Zdenek Kolar and Stefan Adrian Andreescu fight against each other. The head to head is 1-0 for Kolar (see full H2H stats), 1-0 on clay.
The last time that they locked horns, Kolar won 6-2 6-4 in the 1st round in M25 Antalya back in January 2025.
Zdenek Kolar
39 - 20win/loss
222
111
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 63-30 | 3-2 | 60-28 | 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, Kolar reached the 2nd round after defeating Alexander Vasilev 6-2 6-3.
In the 1st round, Kolar had a good straight sets win against Vasilev (6-2 6-3). During the match, Kolar scored 67 points vs Vasilev’s 43. Kolar was very aggressive to blast 25 winners.
Regarding the service games, Kolar scored just 1 ace in the match and he committed only 2 double faults. Overall, Zdenek Kolar was quite effective on serve to win 81% (25/31) of his 1st serve and 58% (7/12) on the second serve. However, this didn’t prevent his to concede the serve once. Zdenek broke Vasilev 5 times after converting 45% of his break points (5/11).
Kolar has positive record in the last 10 years having won 56% of his matches (370-294). 36-18 on clay in 2025. Talking about his performance on the same surface of this tournament, Kolar has a composed 258-180 match record in the last years on clay.
Zdenek’s best result of the current year was reaching the final in M25 Antalya and M15 Grodzisk Mazowiecki.
The Czech has a compiled 39-20 win-loss record in 2025, 36-18 on clay (See FULL STATS).
Previously in the Sofia 1 Challenger
The Czech has never competed in this tournament before.
Stefan Adrian Andreescu
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 50-32 | 2-2 | 48-29 | 0-1 | 0-0 | 0-0 |
| 2024 | 54-23 | 0-0 | 54-23 | 0-0 | 0-0 | 0-0 |
| 2023 | 43-20 | 0-0 | 43-20 | 0-0 | 0-0 | 0-0 |
| 2022 | 18-11 | 1-1 | 17-10 | 0-0 | 0-0 | 0-0 |
| 2021 | 3-4 | 0-0 | 3-4 | 0-0 | 0-0 | 0-0 |
Ranked no. 547 (career-high), Adrian reached the 2nd round after defeating Dusan Obradovic 6-3 6-2, Branko Djuric 6-4 6-3 and Filip Cristian Jianu 7-6(7) 3-2 ret..
In the 1st round against Cristian Jianu, the Romanian had a free pass after Cristian Jianu retired on a 7-67 3-2 . scoreline.
Stefan’s best result of the year was reaching the final in M15 Antalya,M15 Bucharest and M15 Cluj Napoca.
Stefan has a composed 31-22 win-loss record in 2025, 31-21 on clay (See FULL STATS).
H2H Performance in the tournament
Matches, sets, games and points
| Points | Kolar | Adrian |
|---|---|---|
| Match played | 1 | 3 |
| Tot Set | 2 | 7 |
| Tot Games | 17 | 54 |
| Pts | 67-43 | 196-152 |
| Total Points | 110 | 348 |
| Winners | 25 | 84 |
| %Winners | 37% | 43% |
Kolar played 1 match while Adrian competed in 3 matches. Adrian started his run from the qualifications while Kolar had a direct access to the main draw. Both players have not dropped a single set in this event so far. Kolar has played 5 set(s) less than Adrian (2 vs 7). Therefore, Kolar played 37 games less than Adrian. Kolar scored 25 winners (37% of the total points). On the other side, The Romanian made 84 winners (43%).
Serve Performance
| Serve | Kolar | Adrian |
|---|---|---|
| Aces | 1 | 0 |
| Avg per match | 1 | 0 |
| 1st in | 31/43 | 122/171 |
| %1st in | 72% | 71% |
| 1st pts | 25/31 | 84/122 |
| %1st pts | 81% | 69% |
| 2nd pts | 7/12 | 28/49 |
| %2nd pts | 58% | 57% |
Kolar scored 1 ace . Adrian didn’t manage to fire a single ace to far. Kolar won 81% points behind his first serve. He had a solid display on his second serve to win 58% of the points. On the other side, Adrian won 69% of the points on his first serve. He had a solid display on his second serve to win 57% of the points.
How they played the important points
| Breaks | Kolar | Adrian |
|---|---|---|
| Won | 5 | 11 |
| Converted | 5/11 | 11/26 |
| % Converted | 45% | 42% |
| Conceded | 3 | 14 |
| Saved | 2 | 10 |
| % Saved | 67% | 71% |
| Times Broken | 1 | 4 |
Zdenek broke his opponent 5 times with a 45% conversion rate. Kolar conceded his serve once and he saved 67% of the break points that he conceded. Stefan broke his opponents 11 times with a 42% conversion rate. The Romanian conceded his serve 4 times and he saved 71% of the break points that he conceded.
| Kolar | |||
| R1 Vasilev | Total | ||
|---|---|---|---|
| Score | 6-2 6-3 | ||
| Tot Set | 2 | 2 | |
| Tot Games | 17 | 17 | |
| pts | 67-43 | 67-43 | |
| Total points | 110 | 110 | |
| Winners | 25 | 25 | |
| %Winners | 37% | 37% | |
| SERVE | |||
| Aces | 1 | 1 | |
| Double Faults | 2 | 2 | |
| 1st in | 31/43 | 31/43 | |
| % 1st in | 72% | 72% | |
| 1st pts | 25/31 | 25/31 | |
| % 1st pts | 81% | 81% | |
| 2nd pts | 7/12 | 7/12 | |
| % 2nd pts | 58% | 58% | |
| Breaks | |||
| Won | 5 | 5 | |
| Converted | 5/11 | 5/11 | |
| Converted % | 45% | 45% | |
| Conceded | 3 | 3 | |
| Saved | 2/3 | 2 | |
| Saved % | 67% | 67% | |
| Times Broken | 1 | 1 | |
| Adrian | |||||
| Q1 Obradovic | Q3 Djuric | R1 Cristian Jianu | Total | ||
|---|---|---|---|---|---|
| Score | 6-3 6-2 | 6-4 6-3 | 7-67 3-2 ret. | ||
| Tot Set | 2 | 2 | 2 | 6 | |
| Tot Games | 17 | 19 | 18 | 54 | |
| pts | 63-39 | 61-46 | 72-67 | 196-152 | |
| Total points | 102 | 107 | 139 | 348 | |
| Winners | 29 | 29 | 26 | 84 | |
| %Winners | 46% | 48% | 36% | 43% | |
| SERVE | |||||
| Aces | 0 | 0 | 0 | 0 | |
| Double Faults | 1 | 0 | 1 | 2 | |
| 1st in | 42/55 | 39/53 | 41/63 | 122/171 | |
| % 1st in | 76% | 74% | 65% | 71% | |
| 1st pts | 29/42 | 29/39 | 26/41 | 84/122 | |
| % 1st pts | 69% | 74% | 63% | 69% | |
| 2nd pts | 6/13 | 10/14 | 12/22 | 28/49 | |
| % 2nd pts | 46% | 71% | 55% | 57% | |
| Breaks | |||||
| Won | 5 | 3 | 3 | 11 | |
| Converted | 5/11 | 3/5 | 3/10 | 11/26 | |
| Converted % | 45% | 60% | 30% | 42% | |
| Conceded | 6 | 3 | 5 | 14 | |
| Saved | 4/6 | 3/3 | 3/5 | 10 | |
| Saved % | 67% | 100% | 60% | 227% | |
| Times Broken | 2 | 0 | 2 | 4 | |
Tennis Scores in Sofia 1 Challenger
- Dali BlanchBlanch – Olle WallinWallin (6-3 3-6 7-63) – See score progression
- Murkel DellienDellien – Anas MazdrashkiMazdrashki (6-0 6-3) – See score progression
- Denis YevseyevYevseyev – Bernabe Zapata MirallesZapata Miralles (6-2 6-0) – See score progression
- Zdenek KolarKolar – Alexander VasilevVasilev (6-2 6-3) – See score progression
- Luciano Emanuel AmbrogiEmanuel Ambrogi – Joel SchwaerzlerSchwaerzler (7-5 6-4) – See score progression
- Sebastian GimaGima – Franco RoncadelliRoncadelli (6-1 3-6 6-2) – See score progression
- Stefan Adrian AndreescuAdrian Andreescu – Filip Cristian JianuCristian Jianu (7-67 3-2 ret.) – See score progression
- Daniel RinconRincon – Jelle SelsSels (6-1 6-2) – See score progression
- Nikolas Sanchez-IzquierdoSanchez-Izquierdo – Viktor MarkovMarkov (6-4 6-0) – See score progression
- Sebastian GimaGima – Franco RoncadelliRoncadelli (6-1 3-6 6-2) – See score progression
- Marat SharipovSharipov – Ivan IvanovIvanov (6-2 6-2) – See score progression
- Nerman FaticFatic – Kilian FeldbauschFeldbausch (6-74 6-4 6-2) – See score progression
- Sandro KoppKopp – Andrej NedicNedic (7-5 6-1) – See score progression
- Duje AjdukovicAjdukovic – Naoya HondaHonda (2-6 6-4 6-4) – See score progression
- Mika BrunoldBrunold – Oleg PrihodkoPrihodko (6-4 6-4) – See score progression
- Aryan ShahShah – Alexander DonskiDonski (5-7 6-4 6-4) – See score progression
- Milos KarolKarol – Lautaro MidonMidon (6-1 6-3) – See score progression
- Nerman FaticFatic – Kilian FeldbauschFeldbausch (6-7(4) 6-4 6-2) – See score progression
- Luciano Emanuel AmbrogiEmanuel Ambrogi – Joel SchwaerzlerSchwaerzler (7-5 6-4) – See score progression
- Sebastian GimaGima – Franco RoncadelliRoncadelli (6-1 3-6 6-2) – See score progression
- Daniel RinconRincon – Jelle SelsSels (6-1 6-2) – See score progression
- Stefan Adrian AndreescuAdrian Andreescu – Filip Cristian JianuCristian Jianu (7-6(7) 3-2 ret.) – See score progression
- Zdenek KolarKolar – Alexander VasilevVasilev (6-2 6-3) – See score progression
- Nikolas Sanchez-IzquierdoSanchez-Izquierdo – Viktor MarkovMarkov (6-4 6-0) – See score progression
- Marat SharipovSharipov – Ivan IvanovIvanov (6-2 6-2) – See score progression
- Murkel DellienDellien – Anas MazdrashkiMazdrashki (6-0 6-3) – See score progression
- Denis YevseyevYevseyev – Bernabe Zapata MirallesZapata Miralles (6-2 6-0) – See score progression
- Dali BlanchBlanch – Olle WallinWallin (6-3 3-6 7-6(3)) – See score progression
Upcoming matches in the draw
- Nerman FaticFatic – (0-0) – H2H and prediction
- Murkel Alejandro Dellien VelascoAlejandro Dellien Velasco – Denis YevseyevYevseyev (0-0) – H2H and prediction
- Nikolas Sanchez-IzquierdoSanchez-Izquierdo – (0-0) – H2H and prediction
- Sandro KoppKopp – (1-1) – H2H and prediction
- Sebastian GimaGima – (0-0) – H2H and prediction