| Doubles | ||||
|---|---|---|---|---|
| 2021 Challenger de Buenos Aires | ||||
| Final | ||||
| Champions |  Luciano Darderi Juan Bautista Torres | |||
| Runners-up | Hernán Casanova Santiago Rodríguez Taverna | |||
| Score | 7–6, 7–6 | |||
| Events | ||||
| ||||
| ||||
Guido Andreozzi and Andrés Molteni were the defending champions but only Andreozzi chose to defend his title, partnering Thiago Seyboth Wild. Andreozzi withdrew from the tournament before his quarterfinal match.
Luciano Darderi and Juan Bautista Torres won the title after defeating Hernán Casanova and Santiago Rodríguez Taverna 7–6, 7–6 in the final.
Seeds
Rafael Matos / Felipe Meligeni Alves (quarterfinals)- Fernando Romboli /
Federico Zeballos (first round) - Guillermo Durán / Thiago Agustín Tirante (quarterfinals)
Max Schnur / Reese Stalder (first round)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- SE = Special exempt
- PR = Protected ranking
- ITF = ITF entry
- JE = Junior exempt
- w/o = Walkover
- r = Retired
- d = Defaulted
- SR = Special ranking
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | R Matos F Meligeni Alves
| 6 | 7 | ||||||||||||||||||||||||
F Cerúndolo  M Cuevas
| 2 | 5 | 1 | R Matos F Meligeni Alves
| 6 | 6 | |||||||||||||||||||||
| L Darderi JB Torres
| 7 | 6 | L Darderi JB Torres
| 7 | 2 | ||||||||||||||||||||||
| TM Etcheverry R Olivo
| 6 | 2 | L Darderi JB Torres
| 7 | 6 | ||||||||||||||||||||||
| 4 | M Schnur R Stalder
| 6 | 2 | WC | L Aboian V Aboian
| 6 | 4 | ||||||||||||||||||||
| WC | Leonardo Aboian V Aboian
| 3 | 6 | WC | L Aboian V Aboian
| w/o | |||||||||||||||||||||
| WC | Juan Manuel La Serna Lautaro Midón
| 4 | 1 | G Andreozzi T Seyboth Wild
| |||||||||||||||||||||||
| G Andreozzi T Seyboth Wild
| 6 | 6 | L Darderi JB Torres
| 7 | 7 | ||||||||||||||||||||||
| H Casanova S Rodríguez Taverna
| 6 | 7 | H Casanova S Rodríguez Taverna
| 6 | 6 | ||||||||||||||||||||||
| A Collarini Mariano Kestelboim
| 2 | 6 | H Casanova S Rodríguez Taverna
| 6 | 6 | ||||||||||||||||||||||
P Cachin C Gómez-Herrera
| 3 | G Durán TA Tirante
| 1 | 7 | |||||||||||||||||||||||
| 3 | G Durán TA Tirante
| w/o | H Casanova S Rodríguez Taverna
| 6 | 6 | ||||||||||||||||||||||
 N Hardt N Sánchez Izquierdo
| w/o | N Kicker C Ugo Carabelli
| 3 | 2 | |||||||||||||||||||||||
| WC | F Comesaña M Navone
| N Hardt N Sánchez Izquierdo
| 6 | 4 | |||||||||||||||||||||||
| N Kicker C Ugo Carabelli
| 7 | 6 | N Kicker C Ugo Carabelli
| 2 | 6 | ||||||||||||||||||||||
| 2 | F Romboli F Zeballos
| 5 | 0 | ||||||||||||||||||||||||
References
- "Nagal Notches Challenger Buenos Aires Title". September 30, 2019.