# 2019 Monterrey Open – Singles

Garbiñe Muguruza was the defending champion and successfully defended her title, after Victoria Azarenka retired in the final with a leg injury with the score at 6–1, 3–1.

## Seeds

* Angelique Kerber (semifinals)
* Garbiñe Muguruza (champion)
* Anastasia Pavlyuchenkova (quarterfinals)
* Alison Riske (first round)
* Victoria Azarenka (final, retired)
* Kirsten Flipkens (quarterfinals)
* Kristina Mladenovic (quarterfinals)
* Magdaléna Rybáriková (semifinals)

## 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

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Angelique Kerber | 4 | 6 | 1 | | | | |
| 5 | Victoria Azarenka | 6 | 4 | 6 | | | | |
| 5 | Victoria Azarenka | 6 | 4 | 6 | 5 | Victoria Azarenka | 1 | 1$^r$ |
| | | | | | 2 | Garbiñe Muguruza | 6 | 3 |
| 8 | Magdaléna Rybáriková | 2 | 3 | | 2 | Garbiñe Muguruza | 6 | 3 |
| 2 | Garbiñe Muguruza | 6 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A Kerber | 7$^7$ | 6 | | | | | | | | | | | | | | |
| Q | K Kučová | 6$^4$ | 2 | | 1 | A Kerber | 6 | 6 | | | | | | | | | |
| Q | S Xu | 4 | 7 | 3 | | K Muchová | 3 | 4 | | | | | | | | | |
| | K Muchová | 6 | 5 | 6 | | | | | 1 | A Kerber | 6 | 6 | | | | | |
| | H Dart | 2 | 3 | | | | | | 6 | K Flipkens | 2 | 4 | | | | | |
| | D Jakupović | 6 | 6 | | | D Jakupović | 3 | 3 | | | | | | | | | |
| | O Danilović | 2 | 1 | | 6 | K Flipkens | 6 | 6 | | | | | | | | | |
| 6 | K Flipkens | 6 | 6 | | | | | | | | | | 1 | A Kerber | 4 | 6 | 1 |
| 3 | A Pavlyuchenkova | 6 | 6 | | | | | | | | | | 5 | V Azarenka | 6 | 4 | 6 |
| | A Blinkova | 0 | 3 | | 3 | A Pavlyuchenkova | 6 | 6 | | | | | | | | | |
| | T Babos | 6 | 4 | 3 | | I Jorović | 0 | 0 | | | | | | | | | |
| | I Jorović | 2 | 6 | 6 | | | | | 3 | A Pavlyuchenkova | 0 | 4 | | | | | |
| WC | R Zarazúa | 5 | 4 | | | | | | 5 | V Azarenka | 6 | 6 | | | | | |
| | Z Diyas | 7 | 6 | | | Z Diyas | 3 | 2 | | | | | | | | | |
| Q | M Kato | 4 | 2 | | 5 | V Azarenka | 6 | 6 | | | | | | | | | |
| 5 | V Azarenka | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | M Rybáriková | 2 | 7$^7$ | 6 | | | | | | | | | | | | | |
| | M Doi | 6 | 6$^5$ | 4 | 8 | M Rybáriková | 5 | 6 | 6 | | | | | | | | |
| | A Bogdan | 6$^4$ | 2 | | | S Vögele | 7 | 2 | 3 | | | | | | | | |
| | S Vögele | 7$^7$ | 6 | | | | | | | 8 | M Rybáriková | 6 | 6 | | | | |
| | N Hibino | 4 | 6 | 7$^7$ | | | | | | | S Vickery | 4 | 4 | | | | |
| WC | G Olmos | 6 | 1 | 6$^5$ | | N Hibino | 5 | 7 | 6$^5$ | | | | | | | | |
| | S Vickery | 7$^8$ | 6 | | | S Vickery | 7 | 5 | 7$^7$ | | | | | | | | |
| 4 | A Riske | 6$^6$ | 1 | | | | | | | | | | | 8 | M Rybáriková | 2 | 3 |
| 7 | K Mladenovic | 6 | 1 | 7$^7$ | | | | | | | | | | 2 | G Muguruza | 6 | 6 |
| Q | B Haddad Maia | 4 | 6 | 6$^5$ | 7 | K Mladenovic | 6 | 6 | | | | | | | | | |
| LL | G Arn | 7 | 3 | 7 | LL | G Arn | 0 | 2 | | | | | | | | | |
| | L Arruabarrena | 5 | 6 | 5 | | | | | | 7 | K Mladenovic | 1 | 6$^5$ | | | | |
| WC | V Rodríguez | 1 | 0 | | | | | | | 2 | G Muguruza | 6 | 7$^7$ | | | | |
| | M Gasparyan | 6 | 6 | | | M Gasparyan | 3 | 7$^7$ | 2 | | | | | | | | |
| LL | E-G Ruse | 4 | 6$^4$ | | 2 | G Muguruza | 6 | 6$^1$ | 6 | | | | | | | | |
| 2 | G Muguruza | 6 | 7$^7$ | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Marie Bouzková (first round)
* Christina McHale (first round)
* Monica Niculescu (second round, withdrew)
* Beatriz Haddad Maia (qualified)
* Danielle Lao (second round)
* Lu Jiajing (first round)
* Katie Swan (first round)
* Kristie Ahn (second round)

### Qualifiers

* Miyu Kato
* Kristína Kučová
* Xu Shilin
* Beatriz Haddad Maia

### Lucky losers

* Gréta Arn
* Elena-Gabriela Ruse

### Draw
#### First qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Marie Bouzková | 6 | 4 | 4 | | | | | | | |
| | Hiroko Kuwata | 3 | 6 | 6 | | | | | | | |
| | Hiroko Kuwata | 3 | 6 | 6 | Hiroko Kuwata | 6 | 3 | 5 | | | |
| | | | | | Miyu Kato | 1 | 6 | 7 | | | |
| | Ashley Kratzer | 6$^4$ | 6 | 3 | Miyu Kato | 1 | 6 | 7 | | | |
| | Miyu Kato | 7$^7$ | 2 | 6 | | | | | | | |
| | Miyu Kato | 7$^7$ | 2 | 6 | | | | | Miyu Kato | 6 | 6 |
| | | | | | | | | | Alexandra Panova | 4 | 0 |
| | Alexandra Panova | 6 | 7$^{12}$ | | | | | | | | | Alexandra Panova | 4 | 0 |
| | Jana Fett | 2 | 6$^{10}$ | | | | | | | | |
| | Jana Fett | 2 | 6$^{10}$ | | Alexandra Panova | 1 | 6 | 6 | | | |
| | | | | | Asia Muhammad | 6 | 3 | 3 | | | |
| | Asia Muhammad | 7$^7$ | 6 | | Asia Muhammad | 6 | 3 | 3 | | | |
| 6 | Lu Jiajing | 6$^3$ | 4 | | | | | | | | |

#### Second qualifier

| First round | First round | First round | First round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Christina McHale | 2 | 4 | | | | | | |
| | Kristína Kučová | 6 | 6 | | | | | | |
| | Kristína Kučová | 6 | 6 | Kristína Kučová | 6 | 6 | | | |
| | | | | Alexa Guarachi | 1 | 0 | | | |
| | Alexa Guarachi | 6 | 6 | Alexa Guarachi | 1 | 0 | | | |
| WC | Romary Cárdenas Rifka | 1 | 0 | | | | | | |
| WC | Romary Cárdenas Rifka | 1 | 0 | | | | Kristína Kučová | 6 | 6 |
| | | | | | | | Elena-Gabriela Ruse | 2 | 3 |
| | Maria Sanchez | 3 | 6$^4$ | | | | | | | Elena-Gabriela Ruse | 2 | 3 |
| | Jovana Jakšić | 6 | 7$^7$ | | | | | | |
| | Jovana Jakšić | 6 | 7$^7$ | Jovana Jakšić | 2 | 4 | | | |
| | | | | Elena-Gabriela Ruse | 6 | 6 | | | |
| | Elena-Gabriela Ruse | 6 | 7 | Elena-Gabriela Ruse | 6 | 6 | | | |
| 7 | Katie Swan | 2 | 5 | | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Monica Niculescu | 7$^7$ | 6 | | | | | | | | |
| | Natalija Kostić | 6$^2$ | 2 | | | | | | | | |
| | Natalija Kostić | 6$^2$ | 2 | 3 | Monica Niculescu | | | | | | |
| | | | | WC | Ana Karen Guadiana Campos | w/o | | | | | |
| WC | Ana Karen Guadiana Campos | 7$^7$ | 7$^7$ | WC | Ana Karen Guadiana Campos | w/o | | | | | |
| WC | Nikita Uberoi | 6$^3$ | 6$^4$ | | | | | | | | |
| WC | Nikita Uberoi | 6$^3$ | 6$^4$ | | | | | WC | Ana Karen Guadiana Campos | 2 | 2 |
| | | | | | | | | | Xu Shilin | 6 | 6 |
| | Xu Shilin | 6 | 6 | | | | | | | | | Xu Shilin | 6 | 6 |
| | Ana Sofía Sánchez | 2 | 1 | | | | | | | | |
| | Ana Sofía Sánchez | 2 | 1 | | Xu Shilin | 7 | 6 | | | | |
| | | | | 8 | Kristie Ahn | 5 | 1 | | | | |
| | Valeria Savinykh | 3 | 5 | 8 | Kristie Ahn | 5 | 1 | | | | |
| 8 | Kristie Ahn | 6 | 7 | | | | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Beatriz Haddad Maia | 6 | 6 | | | | | | | | | |
| WC | Marcela Zacarías | 2 | 4 | | | | | | | | | |
| WC | Marcela Zacarías | 2 | 4 | | 4 | Beatriz Haddad Maia | 6 | 6 | | | | |
| | | | | | | Andrea Gámiz | 1 | 4 | | | | |
| | Yana Sizikova | 4 | 1 | | | Andrea Gámiz | 1 | 4 | | | | |
| | Andrea Gámiz | 6 | 6 | | | | | | | | | |
| | Andrea Gámiz | 6 | 6 | | | | | | 4 | Beatriz Haddad Maia | 6 | 7 |
| | | | | | | | | | | Gréta Arn | 4 | 5 |
| | Gréta Arn | 6$^2$ | 6 | 6 | | | | | | | | | Gréta Arn | 4 | 5 |
| | Andreea Roșca | 7$^7$ | 4 | 1 | | | | | | | | |
| | Andreea Roșca | 7$^7$ | 4 | 1 | | Gréta Arn | 6 | 6 | | | | |
| | | | | | 5 | Danielle Lao | 4 | 1 | | | | |
| | Deniz Khazaniuk | 4 | 2 | | 5 | Danielle Lao | 4 | 1 | | | | |
| 5 | Danielle Lao | 6 | 6 | | | | | | | | | |