| Type: | ATP Challenger |
| Santo Domingo Open | |
| Current: | 2024 RD Open |
| Event Name: | Santo Domingo Open |
| City: | Santo Domingo |
| Country: | Dominican Republic |
| Venue: | Santo Domingo Tennis Club (La Bocha) |
| Category: | ATP Challenger Tour |
| Surface: | Green clay |
| Draw: | 32S/32Q/16D |
| Prize Money: | $125,000+H |
| Website: | labocha.org |
The Santo Domingo Open, currently known as the RD Open, is a professional tennis tournament played on outdoor green clay courts in the Dominican Republic, originally known as Milex Open.[1] From 2015, it is part of the ATP Challenger Tour. The tournament is currently held in the Santo Domingo Tennis Club (La Bocha) in Santo Domingo, Dominican Republic.
| Year | Champion | Runner-up | Score | |
|---|---|---|---|---|
 Damir Džumhur | 6–4, 6–4 | |||
 Genaro Alberto Olivieri | 7–5, 2–6, 6–4 | |||
| Pedro Cachin | 6–4, 2–6, 6–3 | |||
| 2021 | ||||
| 2020 | ||||
 Juan Pablo Varillas | 6–3, 2–6, 6–2 | |||
| Christian Garín | 6–4, 5–7, 6–4 | |||
 Víctor Estrella Burgos | 7–6(7–4), 6–4 | |||
| Guido Andreozzi | 6–0, 6–4 | |||
| Damir Džumhur | 7–5, 3–1, ret. |
| Year | Champions | Runners-up | Score | |
|---|---|---|---|---|
 Diego Hidalgo Miguel Ángel Reyes-Varela | 6–7(2–7), 6–4, [18–16] | |||
 Pedro Boscardin Dias Gustavo Heide | 6–4, 7–5 | |||
Ruben Gonzales Reese Stalder | 7–6(7–5), 6–3 | |||
| 2021 | ||||
| 2020 | ||||
| Ariel Behar Gonzalo Escobar | 6–7(5–7), 6–4, [12–10] | |||
 Leander Paes Miguel Ángel Reyes-Varela | 4–6, 6–3, [10–5] | |||
Juan Ignacio Londero Luis David Martínez | 6–4, 6–4 | |||
| Ariel Behar Giovanni Lapentti | 7–5, 6–4 | |||
| Roberto Maytín Hans Podlipnik Castillo | 6–3, 2–6, [10–4] |