Adolfo Daniel Vallejo and Andrea Collarini will play each other in the 1st round of the Antofagasta Challenger for the 1st time in their career. They are scheduled to play on Monday at 1:00 pm on CANCHA 7. Here the head to head stats and relative prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Andrea Collarini who should win in 3 sets.
Andrea Collarini -> 1.74
Adolfo Daniel Vallejo -> 2
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Prediction and head to head Adolfo Daniel Vallejo vs. Andrea Collarini
There is no head to head record between Adolfo Daniel Vallejo and Andrea Collarini since this will be the first time that they will fight against each other in the main tour.
Adolfo Daniel Vallejo
32 - 23win/loss
163
163
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 49-28 | 1-4 | 48-24 | 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. 254, the Paraguayan will start his run in the Antofagasta Challenger after he played his last match in the Buenos Aires Challenger where he lost 6-3 6-2 to Alberto Olivieri in the 2nd round on the 25th of September.
Adolfo has an aggregate 31-23 win-loss record in 2025, 30-19 on clay (See FULL STATS).
The Paraguayan’s best result of the season was getting to the final in the Buenos Aires Challenger,M25 Punta del Este,M25 Mar Del Plata and M25 Londrina.
Talking about his overall career, The Paraguayan has an overall 120-94 record. He has a positive 87-67 record on clay.
Previously in the Antofagasta Challenger
Previously, his best result was reaching the final in 2024. See his history
.Andrea Collarini
30 - 26win/loss
272
177
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 41-32 | 1-3 | 40-28 | 0-0 | 0-1 | 0-0 |
| 2024 | 45-26 | 0-1 | 45-25 | 0-0 | 0-0 | 0-0 |
| 2023 | 26-32 | 0-3 | 26-28 | 0-0 | 0-1 | 0-0 |
| 2022 | 23-30 | 3-3 | 20-26 | 0-0 | 0-1 | 0-0 |
| 2021 | 25-37 | 0-2 | 25-34 | 0-0 | 0-1 | 0-0 |
Ranked no. 264, the Argentine will start his run in the Antofagasta Challenger after he played his last match in the Buenos Aires Challenger where he lost 6-2 6-4 to Andres Burruchaga in the 2nd round on the 25th of September.
Andrea has an overall 30-25 win-loss record in 2025, 29-21 on clay (See FULL STATS).
Collarini’s best result of the current season was reaching the semifinal in M25 Punta del Este,the Tallahassee Challenger,the San Miguel de Tucuman Challenger and the Santa Fe Challenger.
In terms of his career, Collarini has an overall 579-427 record. He has a positive 554-374 record on clay.
Previously in the Antofagasta Challenger
Previously, his best result was reaching the semifinal in 2024. See his history.
Upcoming matches in the draw
- Facundo BagnisBagnis – Francesco MaestrelliMaestrelli (1-0) – H2H and prediction
- Andrea CollariniCollarini – (0-0) – H2H and prediction
- Hugo DellienDellien – Alvaro Guillen MezaGuillen Meza (0-1) – H2H and prediction
- Nicolas KickerKicker – Facundo Diaz AcostaDiaz Acosta (1-1) – H2H and prediction
- Gonzalo VillanuevaVillanueva – (0-0) – H2H and prediction
- Hady HabibHabib – Nikolas Sanchez-IzquierdoSanchez-Izquierdo (0-0) – H2H and prediction
- Genaro Alberto OlivieriAlberto Olivieri – Marcelo Tomas Barrios VeraTomas Barrios Vera (1-5) – H2H and prediction
- Emilio NavaNava – Matheus Pucinelle De AlmeidaPucinelle De Almeida (0-0) – H2H and prediction
- Matias SotoSoto – Joao Lucas Reis Da SilvaLucas Reis Da Silva (1-1) – H2H and prediction
- Franco RoncadelliRoncadelli – (0-0) – H2H and prediction