# 2019 Oracle Challenger Series – Houston

The 2019 Oracle Challenger Series – Houston was a professional tennis tournament played on outdoor hard courts. This tournament was part of the 2019 ATP Challenger Tour and the 2019 WTA 125K series. The second edition took place at the George R. Brown Tennis Center from November 10 to 17, 2019 in Houston, United States.

## Men's singles main-draw entrants
### Seeds

| Country | Player | Rank$^1$ | Seed |
| USA | Tennys Sandgren | 69 | 1 |
| USA | Bradley Klahn | 105 | 2 |
| CRO | Ivo Karlović | 106 | 3 |
| USA | Marcos Giron | 124 | 4 |
| TPE | Jason Jung | 130 | 5 |
| AUS | Christopher O'Connell | 140 | 6 |
| BAR | Darian King | 165 | 7 |
| USA | Mitchell Krueger | 196 | 8 |
| RUS | Alexey Vatutin | 197 | 9 |
| USA | Donald Young | 233 | 10 |
| ESP | Adrián Menéndez Maceiras | 236 | 11 |
| SRB | Peđa Krstin | 238 | 12 |
| USA | Jenson Brooksby | 274 | 13 |
| USA | Michael Mmoh | 294 | 14 |
| USA | Michael Redlicki | 315 | 15 |
| USA | Sekou Bangoura | 317 | 16 |
* $^1$ Rankings are as of 4 November 2019.

### Other entrants

The following players received wildcards into the singles main draw:
* Mohamed Abdel-Aziz
* Oliver Crawford
* Brandon Holt
* Zane Khan
* Sumit Sarkar
The following players received entry from the qualifying draw:
* Alafia Ayeni
* Alexis Galarneau

## Women's singles main-draw entrants
### Seeds

| Country | Player | Rank$^1$ | Seed |
| USA | Danielle Collins | 31 | 1 |
| USA | Taylor Townsend | 84 | 2 |
| BEL | Kirsten Flipkens | 95 | 3 |
| UKR | Katarina Zavatska | 110 | 4 |
| ROU | Patricia Maria Țig | 111 | 5 |
| USA | Caty McNally | 118 | 6 |
| SUI | Stefanie Vögele | 119 | 7 |
| USA | Francesca Di Lorenzo | 121 | 8 |
| USA | Whitney Osuigwe | 132 | 9 |
| LUX | Mandy Minella | 137 | 10 |
| USA | Usue Maitane Arconada | 140 | 11 |
| USA | Allie Kiick | 147 | 12 |
| USA | Ann Li | 148 | 13 |
| USA | Caroline Dolehide | 154 | 14 |
| USA | Sachia Vickery | 158 | 15 |
| USA | Varvara Lepchenko | 170 | 15 |
* $^1$ Rankings are as of 4 November 2019.

### Other entrants

The following players received wildcards into the singles main draw:
* Danielle Collins
* Linda Huang
* Katarina Jokić
* Bethanie Mattek-Sands
* CoCo Vandeweghe
The following player received entry into the singles main draw through protected ranking:
* Irina Falconi
The following players received entry from the qualifying draw:
* Catherine Bellis
* Sophie Chang
The following player received entry into the main draw as lucky loser:
* Kayla Day

### Withdrawals

* Sara Errani → replaced by Fanny Stollár
* Jaimee Fourlis → replaced by Hanna Chang
* Mayo Hibi → replaced by Kayla Day
* Katarzyna Kawa → replaced by Grace Min
* Kristína Kučová → replaced by Mari Osaka
* Anastasiya Komardina → replaced by Catherine Harrison
* Asia Muhammad → replaced by Deniz Khazaniuk
* Jessica Pegula → replaced by Hailey Baptiste
* Olivia Rogowska → replaced by Gabriela Cé
* Katherine Sebov → replaced by Giuliana Olmos
* Katie Swan → replaced by Anna Danilina
* Patricia Maria Țig → replaced by Quinn Gleason

## Women's doubles main-draw entrants
### Seeds

| Country | Player | Country | Player | Rank$^1$ | Seed |
| CAN | Sharon Fichman | JPN | Ena Shibahara | 119 | 1 |
| AUS | Ellen Perez | BRA | Luisa Stefani | 140 | 2 |
| MEX | Giuliana Olmos | USA | Sabrina Santamaria | 143 | 3 |
| HUN | Fanny Stollár | USA | Taylor Townsend | 180 | 4 |
* $^1$ Rankings as of 4 November 2019.

### Other entrants

The following pair received a wildcard into the doubles main draw:
* Hailey Baptiste / Ellie Douglas

## Champions
### Men's singles

* Marcos Giron def Ivo Karlović 7–5, 6–7$^{(5–7)}$, 7–6$^{(11–9)}$.

### Women's singles

* Kirsten Flipkens def. CoCo Vandeweghe 7–6$^{(7–4)}$, 6–4

### Men's doubles

* Jonathan Erlich / Santiago González def. Ariel Behar / Gonzalo Escobar 6–3, 7–6$^{(7–4)}$.

### Women's doubles

* Ellen Perez / Luisa Stefani def. Sharon Fichman / Ena Shibahara, 1–6, 6–4, [10–5]