# 2019 RBC Pro Challenge – Singles

Whitney Osuigwe was the defending champion, but lost to Danielle Lao in the quarterfinals.
Mandy Minella won the title, defeating Alexa Glatch in the final, 6–4 6–4.

## Seeds

* Astra Sharma (first round)
* Caty McNally (withdrew)
* Patricia Maria Țig (first round)
* Whitney Osuigwe (quarterfinals)
* Stefanie Vögele (second round)
* Usue Maitane Arconada (first round)
* Ann Li (second round)
* Caroline Dolehide (quarterfinals)

## 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 |
| WC | Alexa Glatch | 5 | 6 | 6 | | | | |
| Q | Marcela Zacarías | 7 | 4 | 2 | | | | |
| Q | Marcela Zacarías | 7 | 4 | 2 | WC | Alexa Glatch | 4 | 4 |
| | | | | | | Mandy Minella | 6 | 6 |
| | Danielle Lao | 1 | 5 | | | Mandy Minella | 6 | 6 |
| | Mandy Minella | 6 | 7 | | | | | |

### Top 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 | Semifinals |
| 1 | A Sharma | 2 | 4 | | | | | | | | | | | | | | | |
| WC | A Glatch | 6 | 6 | | WC | A Glatch | 6 | 7 | | | | | | | | | | |
| | D Khazaniuk | 3 | 1 | | | S Rogers | 3 | 5 | | | | | | | | | | |
| | S Rogers | 6 | 6 | | | | | | | WC | A Glatch | 7$^7$ | 6 | | | | | |
| Q | S Wagner | 4 | 5 | | | | | | | 8 | C Dolehide | 6$^4$ | 1 | | | | | |
| | K Sebov | 6 | 7 | | | K Sebov | 3 | 2 | | | | | | | | | | |
| WC | G Min | 6$^2$ | 6 | 4 | 8 | C Dolehide | 6 | 6 | | | | | | | | | | |
| 8 | C Dolehide | 7$^7$ | 4 | 6 | | | | | | | | | | WC | A Glatch | 5 | 6 | 6 |
| 3 | PM Țig | 4 | 2 | | | | | | | | | | | Q | M Zacarías | 7 | 4 | 2 |
| Q | K Fahey | 6 | 6 | | Q | K Fahey | 5 | 6 | 3 | | | | | | | | | |
| Q | M Zacarías | 6 | 6 | | Q | M Zacarías | 7 | 3 | 6 | | | | | | | | | |
| Q | S Whittle | 4 | 4 | | | | | | | Q | M Zacarías | 5 | | | | | | |
| WC | C Vandeweghe | 7$^7$ | 6 | | | | | | | WC | C Vandeweghe | 2$^r$ | | | | | | |
| Q | S Marand | 6$^0$ | 3 | | WC | C Vandeweghe | 6 | 7 | | | | | | | | | | |
| | M Hibi | 5 | 6$^1$ | | 7 | A Li | 4 | 5 | | | | | | | | | | |
| 7 | A Li | 7 | 7$^7$ | | | | | | | | | | | | | | | |

### 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 |
| 5 | S Vögele | 6 | 6$^2$ | 6 | | | | | | | | | | | | |
| | J Larsson | 4 | 7$^7$ | 2 | 5 | S Vögele | 4 | 6 | 1 | | | | | | | |
| | D Lao | 6 | 6$^3$ | 6 | | D Lao | 6 | 1 | 6 | | | | | | | |
| | G Talabă | 4 | 7$^7$ | 3 | | | | | | | D Lao | 6 | 6 | | | |
| | A Kalinina | 2 | 3 | | | | | | | 4 | W Osuigwe | 3 | 4 | | | |
| Q | E Pérez Somarriba | 6 | 6 | | Q | E Pérez Somarriba | 2 | 4 | | | | | | | | |
| | E Perez | 1 | 6 | 6$^3$ | 4 | W Osuigwe | 6 | 6 | | | | | | | | |
| 4 | W Osuigwe | 6 | 4 | 7$^7$ | | | | | | | | | | D Lao | 1 | 5 |
| 6 | UM Arconada | 6$^6$ | 5 | | | | | | | | | | | M Minella | 6 | 7 |
| Q | G Olmos | 7$^8$ | 7 | | Q | G Olmos | 1 | 6 | 1 | | | | | | | |
| PR | I Falconi | 6 | 6$^1$ | 3 | | M Minella | 6 | 2 | 6 | | | | | | | |
| | M Minella | 4 | 7$^7$ | 6 | | | | | | | M Minella | 6 | 6 | | | |
| | J Fourlis | 0 | 5 | | | | | | | WC | J Loeb | 4 | 1 | | | |
| Q | L Guillermo | 6 | 7 | | Q | L Guillermo | 3 | 4 | | | | | | | | |
| WC | J Loeb | 7 | 6 | | WC | J Loeb | 6 | 6 | | | | | | | | |
| LL | V Babić | 5 | 2 | | | | | | | | | | | | | |