# 2018 Boyd Tinsley Clay Court Classic – Singles

Madison Brengle was the defending champion but lost in the second round to Mari Osaka.
Mariana Duque Mariño won the title after defeating Anhelina Kalinina 0–6, 6–1, 6–2 in the final.

## Seeds

* Madison Brengle (second round)
* Jennifer Brady (semifinals)
* Taylor Townsend (semifinals)
* Mariana Duque Mariño (champion)
* Anhelina Kalinina (final)
* Irina Bara (first round)
* Lizette Cabrera (first round)
* Jamie Loeb (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 |
| 5 | Anhelina Kalinina | 6 | 7$^7$ | | | | | |
| 3 | Taylor Townsend | 3 | 6$^5$ | | | | | |
| 3 | Taylor Townsend | 3 | 6$^5$ | 5 | Anhelina Kalinina | 6 | 1 | 2 |
| | | | | 4 | Mariana Duque Mariño | 0 | 6 | 6 |
| 4 | Mariana Duque Mariño | 6 | 6 | 4 | Mariana Duque Mariño | 0 | 6 | 6 |
| 2 | Jennifer Brady | 4 | 2 | | | | | |

### Top 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 |
| 1 | M Brengle | 7 | 6 | | | | | | | | | | | | | | |
| | M Sanchez | 5 | 2 | | 1 | M Brengle | 1 | 2 | | | | | | | | | |
| Q | M Osaka | 1 | 7$^9$ | 6 | Q | M Osaka | 6 | 6 | | | | | | | | | |
| | K Sebov | 6 | 6$^7$ | 1 | | | | | Q | M Osaka | 2 | 7$^7$ | 5 | | | | |
| | K Day | 2 | 2 | | | | | | 5 | A Kalinina | 6 | 6$^5$ | 7 | | | | |
| LL | AS Sánchez | 6 | 6 | | LL | AS Sánchez | 1 | 2 | | | | | | | | | |
| WC | J Elbaba | 4 | 1 | | 5 | A Kalinina | 6 | 6 | | | | | | | | | |
| 5 | A Kalinina | 6 | 6 | | | | | | | | | | | 5 | A Kalinina | 6 | 7$^7$ |
| 3 | T Townsend | 6 | 6 | | | | | | | | | | | 3 | T Townsend | 3 | 6$^5$ |
| | UM Arconada | 4 | 3 | | 3 | T Townsend | 6 | 6 | | | | | | | | | |
| | J Cristian | 5 | 6$^5$ | | | R Ozaki | 0 | 3 | | | | | | | | | |
| | R Ozaki | 7 | 7$^7$ | | | | | | 3 | T Townsend | 3 | 6 | 7$^7$ | | | | |
| | S Karatantcheva | 6 | 6 | | | | | | | S Karatantcheva | 6 | 4 | 6$^2$ | | | | |
| | B Haas | 3 | 2 | | | S Karatantcheva | 6 | 7$^7$ | | | | | | | | | |
| | A Kratzer | 4 | 6 | 6 | | A Kratzer | 2 | 6$^5$ | | | | | | | | | |
| 7 | L Cabrera | 6 | 3 | 4 | | | | | | | | | | | | | |

### 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 | J Loeb | 2 | 2 | | | | | | | | | | | | | | |
| | G Min | 6 | 6 | | | G Min | 3 | 6 | 6 | | | | | | | | |
| Q | S Chang | 7 | 7 | | Q | S Chang | 6 | 4 | 4 | | | | | | | | |
| | V Duval | 5 | 5 | | | | | | | | G Min | 4 | 1 | | | | |
| | O Ianchuk | 2 | 4 | | | | | | | 4 | M Duque Mariño | 6 | 6 | | | | |
| Q | C Rosatello | 6 | 6 | | Q | C Rosatello | 2 | 3 | | | | | | | | | |
| Q | I Świątek | 6$^3$ | 3 | | 4 | M Duque Mariño | 6 | 6 | | | | | | | | | |
| 4 | M Duque Mariño | 7$^7$ | 6 | | | | | | | | | | | 4 | M Duque Mariño | 6 | 6 |
| 6 | I Bara | 4 | 0 | | | | | | | | | | | 2 | J Brady | 4 | 2 |
| WC | K Stewart | 6 | 6 | | WC | K Stewart | 4 | 6 | 6 | | | | | | | | |
| | U Eikeri | 6 | 4 | 6$^2$ | | F Di Lorenzo | 6 | 3 | 3 | | | | | | | | |
| | F Di Lorenzo | 3 | 6 | 7$^7$ | | | | | | WC | K Stewart | 3 | 5 | | | | |
| WC | A Kiick | 3 | 6 | 6 | | | | | | 2 | J Brady | 6 | 7 | | | | |
| | L Chirico | 6 | 3 | 2 | WC | A Kiick | 2 | 5 | | | | | | | | | |
| | I Falconi | 6 | 4 | 4 | 2 | J Brady | 6 | 7 | | | | | | | | | |
| 2 | J Brady | 1 | 6 | 6 | | | | | | | | | | | | | |