2020 Sánchez-Casal Cup – Doubles
# 2020 Sánchez-Casal Cup – Doubles

Simone Bolelli and David Vega Hernández were the defending champions but chose not to defend their title.

Szymon Walków and Tristan-Samuel Weissborn won the title after defeating Harri Heliövaara and Alex Lawson 6–1, 4–6, [10–8] in the final.

## Seeds

* Luis David Martínez / Miguel Ángel Reyes-Varela (first round)
* Treat Huey / Nathaniel Lammons (first round)
* Sriram Balaji / Luca Margaroli (semifinals)
* Szymon Walków / Tristan-Samuel Weissborn (champions)

## 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 | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | LD Martínez MÁ Reyes-Varela | $6^5$ | 6 | [9] | | | | | | | | | | | | | | | |
| | R Galloway H Reese | $7^7$ | 1 | [11] | | R Galloway H Reese | 6 | 4 | [2] | | | | | | | | | | |
| | H Heliövaara A Lawson | 6 | 6 | | | H Heliövaara A Lawson | 1 | 6 | [10] | | | | | | | | | | |
| WC | Max Andrews Jaume Pla Malfeito | 0 | 4 | | | | | | | | H Heliövaara A Lawson | 7 | $6^8$ | [10] | | | | | |
| 3 | S Balaji L Margaroli | 5 | 6 | [10] | | | | | | 3 | S Balaji L Margaroli | 5 | $7^{10}$ | [7] | | | | | |
| | R Ramanathan A Vukic | 7 | 4 | [5] | 3 | S Balaji L Margaroli | 6 | 6 | | | | | | | | | | | |
| WC | D Marrero N Zimonjić | 4 | 6 | [5] | WC | S Martos Gornés M Vilella Martínez | 3 | 4 | | | | | | | | | | | |
| WC | S Martos Gornés M Vilella Martínez | 6 | 3 | [10] | | | | | | | | | | | | H Heliövaara A Lawson | 1 | 6 | [8] |
| Alt | D Džumhur A Harris | $1^r$ | | | | | | | | | | | | | 4 | S Walków T-S Weissborn | 6 | 4 | [10] |
| | R Matos P Sousa | 5 | | | | R Matos P Sousa | | | | | | | | | | | | | |
| Alt | K Coppejans E Couacaud | 3 | 2 | | 4 | S Walków T-S Weissborn | w/o | | | | | | | | | | | | |
| 4 | S Walków T-S Weissborn | 6 | 6 | | | | | | | 4 | S Walków T-S Weissborn | $6^5$ | 6 | [10] | | | | | |
| | O Luz D Popko | 4 | 6 | [11] | | | | | | | G Durán R Olivo | $7^7$ | 3 | [5] | | | | | |
| | R Arneodo A Olivetti | 6 | 2 | [9] | | O Luz D Popko | 1 | 3 | | | | | | | | | | | |
| | G Durán R Olivo | $6^7$ | 6 | [10] | | G Durán R Olivo | 6 | 6 | | | | | | | | | | | |
| 2 | T Huey N Lammons | $7^9$ | 4 | [7] | | | | | | | | | | | | | | | |
