Facundo Diaz Acosta and Adolfo Daniel Vallejo will square off in the 2nd round of the Zug Challenger for the 1st time in their career. They are scheduled to play on Thursday at 10:30 am on CENTER COURT. In this post, we analyze their head to head performance and prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Facundo Diaz Acosta who should win in 2 sets.
Facundo Diaz Acosta -> 1.38
Adolfo Daniel Vallejo -> 2.85
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Prediction and head to head Facundo Diaz Acosta vs. Adolfo Daniel Vallejo
There is no head to head record between Facundo Diaz Acosta and Adolfo Daniel Vallejo since this will be the first time that they will square off in the main tour.
Facundo Diaz Acosta
9 - 10win/loss
226
47
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 21-20 | 4-4 | 17-15 | 0-0 | 0-1 | 0-0 |
| 2024 | 19-22 | 3-8 | 16-10 | 0-3 | 0-1 | 0-0 |
| 2023 | 50-25 | 4-4 | 46-20 | 0-0 | 0-1 | 0-0 |
| 2022 | 31-21 | 0-1 | 31-19 | 0-0 | 0-1 | 0-0 |
| 2021 | 43-30 | 7-4 | 36-26 | 0-0 | 0-0 | 0-0 |
Ranked no. 186, the Argentine reached the 2nd round after defeating Marat Sharipov 6-4 6-3.
In the 1st round, The Argentine had a good straight sets win against Sharipov (6-4 6-3). During the match, Diaz Acosta scored 58 points vs Sharipov’s 44. Diaz Acosta was very aggressive to blast 27 winners.
Talking about the service games, Diaz Acosta made 4 aces and he was very consistent in conceding no double faults. Facundo Diaz Acosta was exceptionally efficient on serve to win 87% (27/31) of his 1st serve and 68% (13/19) on the second serve. This was the main reason for not conceding a single break during the match. Diaz Acosta broke Sharipov twice after converting 67% of his break points (2/3).
Diaz Acosta has a solid record in the last 9 years having won 60% of his matches (217-144). 5-5 on clay in 2025. Regarding his performance on the same surface of this tournament, Diaz Acosta has a composed189-109 match record in the last 9 years on clay.
Facundo’s best result of the year was getting to the semifinal in the Trieste Challenger.
Diaz Acosta has an overall 9-10 win-loss record in 2025, 5-5 on clay (See FULL STATS).
Previously in the Zug Challenger
Facundo has never competed in this tournament before.
Adolfo Daniel Vallejo
20 - 19win/loss
163
163
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 48-28 | 1-4 | 47-24 | 0-0 | 0-0 | 0-0 |
| 2024 | 33-27 | 7-4 | 26-23 | 0-0 | 0-0 | 0-0 |
| 2023 | 30-25 | 6-8 | 24-17 | 0-0 | 0-0 | 0-0 |
| 2022 | 23-17 | 17-8 | 4-6 | 2-3 | 0-0 | 0-0 |
| 2021 | 1-2 | 0-0 | 1-2 | 0-0 | 0-0 | 0-0 |
Ranked no. 246, Adolfo reached the 2nd round after beating Facundo Mena 6-1 6-2.
In the 1st round, The Paraguayan had a good straight sets win against Mena (6-1 6-2). During the match Daniel Vallejo scored 57 points vs Mena’s 27. The Paraguayan was very aggressive to blast 23 winners.
About the serving games, Daniel Vallejo wasn’t able to score even 1 ace for the entire match and he was pretty solid in conceding no double faults for the entire match. Adolfo Daniel Vallejo was quite effective on serve to win 88% (23/26) of his 1st serve and 60% (6/10) on the second serve. This was the main reason for not conceding a single break during the match. The Paraguayan was clinical in his return game without wasting any break point and break Mena 5 times.
The Paraguayan’s best result of the current season was reaching the final in the Buenos Aires Challenger and M25 Punta del Este.
Adolfo has an overall 20-19 win-loss record in 2025, 19-17 on clay (See FULL STATS).
Previously in the Zug Challenger
Previously, his best result was reaching the 2nd round in 2024. See his history.
H2H Performance in the tournament
Matches, sets, games and points
| Points | Diaz Acosta | Daniel Vallejo |
|---|---|---|
| Match played | 1 | 1 |
| Tot Set | 2 | 2 |
| Tot Games | 19 | 15 |
| Pts | 58-44 | 57-27 |
| Total Points | 102 | 84 |
| Winners | 27 | 23 |
| %Winners | 47% | 40% |
Both Diaz Acosta and Daniel Vallejo played 1 match. Both players have not conceded a single set in this event so far. Talking about their workload, Diaz Acosta and Daniel Vallejo have played the same amount of sets 2. However, Diaz Acosta played 4 games more than Daniel Vallejo. Facundo scored 27 winners (47% of the total points). On the other side, Adolfo made 23 winners (40%).
Serve Performance
| Serve | Diaz Acosta | Daniel Vallejo |
|---|---|---|
| Aces | 4 | 0 |
| Avg per match | 4 | 0 |
| 1st in | 31/50 | 26/36 |
| %1st in | 62% | 72% |
| 1st pts | 27/31 | 23/26 |
| %1st pts | 87% | 88% |
| 2nd pts | 13/19 | 6/10 |
| %2nd pts | 68% | 60% |
Diaz Acosta managed to score 4 aces . Daniel Vallejo didn’t manage to fire a single ace to far. Diaz Acosta won 87% points behind his first serve. He had a solid display on his second serve to win 68% of the points. On the other side, Daniel Vallejo won 88% of the points on his first serve. He had a solid display on his second serve to win 60% of the points.
How they played the important points
| Breaks | Diaz Acosta | Daniel Vallejo |
|---|---|---|
| Won | 2 | 5 |
| Converted | 2/3 | 5/5 |
| % Converted | 67% | 100% |
| Conceded | 0 | 0 |
| Saved | 0 | 0 |
| % Saved | 0% | 0% |
| Times Broken | 0 | 0 |
Facundo broke his opponent twice with a 67% conversion rate. The Argentine extremely effective on his serve as he has never conceded a single service game after saving 0 break points. Daniel Vallejo broke his opponent 5 times with a 100% conversion rate. Daniel Vallejo was rock solid on his serve as he has never conceded a single service game after saving 0 break points.
| Diaz Acosta | |||
| R1 Sharipov | Total | ||
|---|---|---|---|
| Score | 6-4 6-3 | ||
| Tot Set | 2 | 2 | |
| Tot Games | 19 | 19 | |
| pts | 58-44 | 58-44 | |
| Total points | 102 | 102 | |
| Winners | 27 | 27 | |
| %Winners | 47% | 47% | |
| SERVE | |||
| Aces | 4 | 4 | |
| Double Faults | 0 | 0 | |
| 1st in | 31/50 | 31/50 | |
| % 1st in | 62% | 62% | |
| 1st pts | 27/31 | 27/31 | |
| % 1st pts | 87% | 87% | |
| 2nd pts | 13/19 | 13/19 | |
| % 2nd pts | 68% | 68% | |
| Breaks | |||
| Won | 2 | 2 | |
| Converted | 2/3 | 2/3 | |
| Converted % | 67% | 67% | |
| Conceded | 0 | 0 | |
| Saved | 0/0 | 0 | |
| Saved % | – | 0% | |
| Times Broken | 0 | 0 | |
| Daniel Vallejo | |||
| R1 Mena | Total | ||
|---|---|---|---|
| Score | 6-1 6-2 | ||
| Tot Set | 2 | 2 | |
| Tot Games | 15 | 15 | |
| pts | 57-27 | 57-27 | |
| Total points | 84 | 84 | |
| Winners | 23 | 23 | |
| %Winners | 40% | 40% | |
| SERVE | |||
| Aces | 0 | 0 | |
| Double Faults | 0 | 0 | |
| 1st in | 26/36 | 26/36 | |
| % 1st in | 72% | 72% | |
| 1st pts | 23/26 | 23/26 | |
| % 1st pts | 88% | 88% | |
| 2nd pts | 6/10 | 6/10 | |
| % 2nd pts | 60% | 60% | |
| Breaks | |||
| Won | 5 | 5 | |
| Converted | 5/5 | 5/5 | |
| Converted % | 100% | 100% | |
| Conceded | 0 | 0 | |
| Saved | 0/0 | 0 | |
| Saved % | – | 0% | |
| Times Broken | 0 | 0 | |
Tennis Scores in Zug Challenger
- Harold MayotMayot – Elias YmerYmer (6-3 6-1) – Stats, scores, rankings
- Stefanos SakellaridisSakellaridis – Geoffrey BlancaneauxBlancaneaux (6-4 6-3) – Stats, scores, rankings
Upcoming matches in the draw
- Andrea CollariniCollarini – (0-0) – H2H and prediction
- Lukas KleinKlein – (0-0) – H2H and prediction
- Zsombor PirosPiros – Nerman FaticFatic (1-1) – H2H and prediction
- Jakub PaulPaul – Calvin HemeryHemery (1-0) – H2H and prediction
- Facundo Diaz AcostaDiaz Acosta – (0-0) – H2H and prediction