# 2019 Milex Open – Singles

Cristian Garín was the defending champion but chose not to defend his title.
Juan Pablo Varillas won the title after defeating Federico Coria 6–3, 2–6, 6–2 in the final.

## Seeds

All seeds receive a bye into the second round.
* Federico Delbonis (third round)
* Hugo Dellien (semifinals)
* Leonardo Mayer (second round)
* Thiago Monteiro (semifinals)
* Guido Andreozzi (third round, retired)
* Sumit Nagal (second round, retired)
* Facundo Bagnis (quarterfinals)
* Federico Coria (final)
* Federico Gaio (third round)
* Pedro Martínez (second round)
* Alessandro Giannessi (quarterfinals)
* Mario Vilella Martínez (third round)
* Facundo Mena (second round)
* Peđa Krstin (second round)
* Andrea Collarini (third round)
* Daniel Elahi Galán (second 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

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| | Juan Pablo Varillas | 6 | 6 | | | | | | | | | |
| 7 | Facundo Bagnis | 3 | 3 | | | | | | | | | |
| 7 | Facundo Bagnis | 3 | 3 | | Juan Pablo Varillas | 6 | 6 | | | | | |
| | | | | 4 | Thiago Monteiro | 4 | 2 | | | | | |
| 4 | Thiago Monteiro | 6 | 6 | 4 | Thiago Monteiro | 4 | 2 | | | | | |
| | Alejandro Tabilo | 3 | 2 | | | | | | | | | |
| | Alejandro Tabilo | 3 | 2 | | | | | | Juan Pablo Varillas | 6 | 2 | 6 |
| | | | | | | | | 8 | Federico Coria | 3 | 6 | 2 |
| 8 | Federico Coria | 6 | 6 | | | | | | | | | | 8 | Federico Coria | 3 | 6 | 2 |
| | Guilherme Clezar | 2 | 3 | | | | | | | | | |
| | Guilherme Clezar | 2 | 3 | 8 | Federico Coria | 6 | 6 | | | | | |
| | | | | 2 | Hugo Dellien | 3 | 1 | | | | | |
| 11 | Alessandro Giannessi | 3 | 1 | 2 | Hugo Dellien | 3 | 1 | | | | | |
| 2 | Hugo Dellien | 6 | 6 | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | F Delbonis | 3 | 7$^7$ | 7 | | | | | | | | | |
| | GM Moroni | 6 | 6 | | | GM Moroni | 6 | 6$^4$ | 5 | | | | | | | | | |
| | G Escobar | 3 | 1 | | | | | | | 1 | F Delbonis | 6 | 3 | 4 | | | | |
| Alt | A González | 2 | 5 | | | | | | | | JP Varillas | 3 | 6 | 6 | | | | |
| | JP Varillas | 6 | 7 | | | JP Varillas | 6 | 6 | | | | | | | | | | |
| | | | | | 16 | DE Galán | 2 | 3 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | JP Varillas | 6 | 6 |
| | | | | | | | | | | | | | | | 7 | F Bagnis | 3 | 3 |
| | | | | | 9 | F Gaio | 6 | 1 | | | | | | | | | | |
| WC | N Hardt | 2 | 6 | 1 | | R Olivo | 4 | 0$^r$ | | | | | | | | | | |
| | R Olivo | 6 | 3 | 6 | | | | | | 9 | F Gaio | 6$^4$ | 2 | | | | | |
| | P Cachin | 6$^8$ | 3 | | | | | | | 7 | F Bagnis | 7$^7$ | 6 | | | | | |
| | D Hidalgo | 7$^{10}$ | 6 | | | D Hidalgo | 3 | 2 | | | | | | | | | | |
| | | | | | 7 | F Bagnis | 6 | 6 | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | T Monteiro | 6 | 6 | | | | | | | | | | |
| WC | V Estrella Burgos | 7 | 7 | | WC | V Estrella Burgos | 2 | 2 | | | | | | | | | | |
| | M Arévalo | 5 | 5 | | | | | | | 4 | T Monteiro | 6 | 7 | | | | | |
| | Oscar José Gutierrez | 4 | 6 | 4 | | | | | | | OJ Gutierrez | 3 | 5 | | | | | |
| | G Elias | 6 | 3 | 4$^r$ | | OJ Gutierrez | 7 | 6 | | | | | | | | | | |
| | | | | | 14 | P Krstin | 5 | 4 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 4 | T Monteiro | 6 | 6 |
| | | | | | | | | | | | | | | | | A Tabilo | 3 | 2 |
| | | | | | 12 | M Vilella Martínez | 6 | 6 | | | | | | | | | | |
| | Jeremy Jahn | 6 | 4 | 0$^r$ | | M Hamou | 2 | 1 | | | | | | | | | | |
| | M Hamou | 2 | 6 | 2 | | | | | | 12 | M Vilella Martínez | 6 | 0 | 3 | | | | |
| WC | C Gómez-Herrera | 4 | 4 | | | | | | | | A Tabilo | 3 | 6 | 6 | | | | |
| | A Tabilo | 6 | 6 | | | A Tabilo | 6$^5$ | 6 | 2 | | | | | | | | | |
| | | | | | 6 | S Nagal | 7$^7$ | 0 | 0$^r$ | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | F Coria | 6 | 6 | | | | | | | | | |
| | J Hernández-Fernández | 6 | 6 | | | J Hernández-Fernández | 4 | 1 | | | | | | | | | |
| | M Chazal | 1 | 3 | | | | | | | 8 | F Coria | 7$^7$ | 6 | | | | |
| | F Zeballos | 2 | 6 | 6 | | | | | | | F Zeballos | 6$^2$ | 3 | | | | |
| WC | P Bertran | 6 | 1 | 1 | | F Zeballos | 1 | 7 | 6 | | | | | | | | |
| | | | | | 10 | P Martínez | 6 | 5 | 4 | | | | | | | | |
| | | | | | | | | | | | | | | 8 | F Coria | 6 | 6 |
| | | | | | | | | | | | | | | | G Clezar | 2 | 3 |
| | | | | | 13 | F Mena | 2 | 6 | 0 | | | | | | | | |
| | J Menezes | 6 | 7$^7$ | | | J Menezes | 6 | 4 | 6 | | | | | | | | |
| | P Sakamoto | 2 | 6$^3$ | | | | | | | | J Menezes | 3 | 2 | | | | |
| | JP Ficovich | 4 | 3 | | | | | | | | G Clezar | 6 | 6 | | | | |
| | G Clezar | 6 | 6 | | | G Clezar | 6 | 1 | 7$^7$ | | | | | | | | |
| | | | | | 3 | L Mayer | 3 | 6 | 6$^5$ | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | G Andreozzi | 6 | 6 | | | | | | | | | |
| | R Cid Subervi | 6 | 3 | 1 | | O Luz | 4 | 3 | | | | | | | | | |
| | O Luz | 2 | 6 | 6 | | | | | | 5 | G Andreozzi | 6 | 6$^r$ | | | | |
| WC | J Olivares | 3 | 4 | | | | | | | 11 | A Giannessi | 3 | 6 | | | | |
| | T Seyboth Wild | 6 | 6 | | | T Seyboth Wild | 1 | 4 | | | | | | | | | |
| | | | | | 11 | A Giannessi | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 11 | A Giannessi | 3 | 1 |
| | | | | | | | | | | | | | | 2 | H Dellien | 6 | 6 |
| | | | | | 15 | A Collarini | 6$^4$ | 6 | 6 | | | | | | | | |
| | N Álvarez | 6 | 6 | | | N Álvarez | 7$^7$ | 4 | 1 | | | | | | | | |
| | Jordi Arconada | 3 | 0 | | | | | | | 15 | A Collarini | 4 | 4 | | | | |
| | G Villanueva | 4 | 6 | 6 | | | | | | 2 | H Dellien | 6 | 6 | | | | |
| | A Molteni | 6 | 4 | 2 | | G Villanueva | 2 | 3 | | | | | | | | | |
| | | | | | 2 | H Dellien | 6 | 6 | | | | | | | | | |