# 2020 Mercer Tennis Classic – Singles

Katerina Stewart was the defending champion, but lost in the first round to Ann Li.
Catherine Bellis won the title, defeating Marta Kostyuk in final after she retired at 6–4, 6–7$^{(4–7)}$, 0–0.

## Seeds

* Misaki Doi (quarterfinals)
* Nina Stojanović (first round)
* Monica Puig (withdrew)
* Kristie Ahn (second round)
* Ann Li (second round)
* Marta Kostyuk (final)
* Greet Minnen (first round)
* Caty McNally (second round)
* Astra Sharma (first 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

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 6 | Marta Kostyuk | 6 | 6 | | | | | |
| Q | Magdalena Fręch | 3 | 2 | | | | | |
| Q | Magdalena Fręch | 3 | 2 | 6 | Marta Kostyuk | 4 | 7$^7$ | 0$^r$ |
| | | | | WC | Catherine Bellis | 6 | 6$^4$ | 0 |
| WC | Catherine Bellis | 6 | 1 | WC | Catherine Bellis | 6 | 6$^4$ | 0 |
| Q | Varvara Lepchenko | 3 | 0$^r$ | | | | | |

### 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 |
| 1 | M Doi | 6 | 6 | | | | | | | | | | | | | | |
| WC | L Sun | 2 | 0 | | 1 | M Doi | 6$^5$ | 7$^7$ | 6 | | | | | | | | |
| | O Govortsova | 4 | 1 | | Q | V Cepede Royg | 7$^7$ | 6$^3$ | 1 | | | | | | | | |
| Q | V Cepede Royg | 6 | 6 | | | | | | | 1 | M Doi | 2 | 1 | | | | |
| Q | R Zarazúa | 6 | 3 | | | | | | | 6 | M Kostyuk | 6 | 6 | | | | |
| | UM Arconada | 2 | 0$^r$ | | Q | R Zarazúa | 0 | 4 | | | | | | | | | |
| LL | M Benoît | 3 | 2 | | 6 | M Kostyuk | 6 | 6 | | | | | | | | | |
| 6 | M Kostyuk | 6 | 6 | | | | | | | | | | | 6 | M Kostyuk | 6 | 6 |
| 9 | A Sharma | 3 | 4 | | | | | | | | | | | Q | M Fręch | 3 | 2 |
| | F Di Lorenzo | 6 | 6 | | | F Di Lorenzo | 6 | 6 | | | | | | | | | |
| | W Osuigwe | 3 | 6 | 0 | Q | C Osorio | 2 | 2 | | | | | | | | | |
| Q | C Osorio | 6 | 4 | 6 | | | | | | | F Di Lorenzo | 5 | 3 | | | | |
| Q | M Fręch | 6 | 5 | | | | | | | Q | M Fręch | 7 | 6 | | | | |
| | V Tomova | 2 | 2$^r$ | | Q | M Fręch | 7$^7$ | 6 | | | | | | | | | |
| WC | E Navarro | 2 | 4 | | 8 | C McNally | 6$^5$ | 3 | | | | | | | | | |
| 8 | C McNally | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | G Minnen | 6 | 3 | 1 | | | | | | | | | | | | | |
| Q | G Talabă | 1 | 6 | 6 | | G Talabă | 1 | 3 | | | | | | | | | |
| WC | C Bellis | 6 | 7 | | WC | C Bellis | 6 | 6 | | | | | | | | | |
| | L Arruabarrena | 3 | 5 | | | | | | WC | C Bellis | 6 | 6 | | | | | |
| | S Errani | 6 | 6 | | | | | | | S Errani | 0 | 3 | | | | | |
| | K Kawa | 3 | 0 | | | S Errani | 6 | 6 | | | | | | | | | |
| Q | T Andrianjafitrimo | 3 | 3 | | 4 | K Ahn | 3 | 4 | | | | | | | | | |
| 4 | K Ahn | 6 | 6 | | | | | | | | | | | WC | C Bellis | 6 | 1 |
| 5 | A Li | 6 | 6 | | | | | | | | | | | Q | V Lepchenko | 3 | 0$^r$ |
| WC | K Stewart | 1 | 4 | | 5 | A Li | 4 | 3 | | | | | | | | | |
| | S Vickery | 6 | 6 | | | S Vickery | 6 | 6 | | | | | | | | | |
| JE | D Parry | 3 | 1 | | | | | | | S Vickery | 7$^7$ | 4 | 4 | | | | |
| | C Dolehide | 6$^3$ | 3 | | | | | | Q | V Lepchenko | 6$^5$ | 6 | 6 | | | | |
| Q | K Volynets | 7$^7$ | 6 | | Q | K Volynets | 0 | 1 | | | | | | | | | |
| Q | V Lepchenko | 6$^5$ | 6 | 7$^8$ | Q | V Lepchenko | 6 | 6 | | | | | | | | | |
| 2 | N Stojanović | 7$^7$ | 2 | 6$^6$ | | | | | | | | | | | | | |