| Doubles | |
|---|---|
| 2013 Cachantún Cup | |
| Champions |  Marcelo Demoliner João Souza |
| Runners-up |  Federico Delbonis Diego Junqueira |
| Final score | 7–5, 6–1 |
Paul Capdeville and Marcel Felder were the defending champions, but they lost in the quarterfinals to Federico Delbonis and Diego Junqueira.
Marcelo Demoliner and João Souza defeated Delbonis and Junqueira 7–5, 6–1 in the final to win the title.
Marcelo Demoliner / João Souza (champions)
Jordan Kerr / 
Andreas Siljeström (first round) Martín Alund / Facundo Bagnis (semifinals)
Paul Capdeville / 
Marcel Felder (quarterfinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | M Demoliner J Souza | 6 | 6 | ||||||||||||||||||||||||
F de Paula  A González | 3 | 4 | 1 | M Demoliner J Souza | 6 | 6 | |||||||||||||||||||||
 B Pašanski  A Veić | 2 | 6 | [10] | B Pašanski A Veić | 4 | 3 | |||||||||||||||||||||
| A Behar A Velotti | 6 | 4 | [6] | 1 | M Demoliner J Souza | 6 | 7 | ||||||||||||||||||||
| 3 | M Alund F Bagnis | w/o | 3 | M Alund F Bagnis | 4 | 5 | |||||||||||||||||||||
 D Beretta  JC Campozano | 3 | M Alund F Bagnis | 6 | 6 | |||||||||||||||||||||||
| G Clezar R Hocevar | 68 | 4 | WC | H Podlipnik JC Sáez | 4 | 2 | |||||||||||||||||||||
| WC | H Podlipnik JC Sáez | 710 | 6 | 1 | M Demoliner J Souza | 7 | 6 | ||||||||||||||||||||
| F Delbonis D Junqueira | 6 | 6 | F Delbonis D Junqueira | 5 | 1 | ||||||||||||||||||||||
| R Olivo DS Schwartzman | 1 | 4 | F Delbonis D Junqueira | 6 | 6 | ||||||||||||||||||||||
| WC | J Aguilar N Massú | 4 | P Capdeville M Felder | 2 | 4 | ||||||||||||||||||||||
| 4 | P Capdeville M Felder | w/o | F Delbonis D Junqueira | 7 | 6 | ||||||||||||||||||||||
| A Collarini A Molteni | w/o | A Collarini A Molteni | 5 | 3 | |||||||||||||||||||||||
 T de Bakker  J Ward | A Collarini A Molteni | 4 | 77 | [11] | |||||||||||||||||||||||
| WC | C Garín G Lama | 77 | 6 | WC | C Garín G Lama | 6 | 63 | [9] | |||||||||||||||||||
| 2 | J Kerr A Siljeström | 64 | 4 | ||||||||||||||||||||||||
Marcelo Demoliner became the first champion of this tournament. He defeated Rogerio Dutra da Silva in the final.
Brian Dabul and Marcel Felder were the defending champions. Dabul didn't compete this year and Felder played with Andrés Molteni, losing in the quarterfinals.
Rogério Dutra da Silva and Júlio Silva won the title, defeating Vítor Manzini and Pedro Zerbinni 7–6(3), 6–2 in the final.
Máximo González was the defending champion from the last edition of the tournament in 2009. He reached the final, where he defeated Éric Prodon 7–5, 0–6, 6–2.
Marcos Daniel was the defending champion, but lost to Ricardo Hocevar 6–7(3–7), 1–6 in the first round. José Acasuso defeated Marcelo Demoliner 6–2, 6–2 in the final.
Diego Junqueira is the defending champion, but lost in the quarterfinals.
Carlos Berlocq won the title, defeating Gastão Elias 6–1, 7–6(7–3) in the final.
Facundo Bagnis is the defending champion but lost in the quarterfinals.
Alejandro Falla won the title, defeating Horacio Zeballos 6–4, 6–1 in the final.
João Souza is the defending champion, but lost in the first round to Facundo Argüello.
Ivo Minář won the title by defeating Ricardo Hocevar 4–6, 6–1, 6–4 in the final.
Paul Capdeville and Marcel Felder won the first edition of the tournament by defeating André Ghem and João Pedro Sorgi 7–5, 6–3 in the final.
Juan Sebastián Cabal and Robert Farah successfully defended their title by defeating Marcelo Demoliner and João Souza 6–3, 7–6(7–4) in the final.
Marcel Felder and Caio Zampieri were the defending champions but they decided not to participate together.
Felder played alongside Máximo González, while Zampieri partnered up with Henrique Meloni.
Marcelo Demoliner and João Souza won the title, defeating Marcel Felder and Máximo González 6–1, 7–5 in the final.
Marcelo Demoliner and João Souza won the final 6–3, 3–6, [10–7] against Simon Greul and Alessandro Motti.
Paul Capdeville and Nicolás Massú were the defending champions but decided not to participate.
Nicholas Monroe and Simon Stadler won the final 6–4, 6–4 against Renzo Olivo and Marco Trungelliti.
Wayne Odesnik was the defending champion but lost in the final to Federico Delbonis 6–7(4–7), 3–6.
Ariel Behar and Horacio Zeballos were the defending champions but decided not to participate.
Marcelo Demoliner and Franko Škugor won the final 7–6(10–8), 6–2 against Sergio Galdós and Marco Trungelliti.
Juan Mónaco was the defending champion, but lost to Guillaume Rufin in the second round.
Horacio Zeballos won the title by defeating Rafael Nadal, in his return to the pro circuit, in the final, 6–7(2–7), 7–6(8–6), 6–4.
Nicolás Almagro was the two-time defending champion, but lost in the quarterfinals to David Nalbandian.
Rafael Nadal won the title, defeating Nalbandian in the final 6–2, 6–3.
Paul Capdeville was the defending champion, but lost in the second round to Marco Trungelliti.
Facundo Bagnis won the title by defeating Thiemo de Bakker 7–6(7–2), 7–6(7–3) in the final.
Paul Capdeville and Marcel Felder were the defending champions but Felder decided not to participate.
Capdeville played alongside Hans Podlipnik-Castillo, but they withdrawn after the first round.
Marcelo Demoliner and João Souza defeated James Cerretani and Pierre-Hugues Herbert 6–2, 4–6, [10–6] in the final to win the title.
Kevin King and Juan Carlos Spir were the defending champions, but lost to Duilio Beretta and Martín Cuevas in the quarterfinals.
Marcelo Demoliner and João Souza were the defending champions but chose not to defend their title.