| Singles | |
|---|---|
| 2018 Hardee's Pro Classic | |
| Champion |  Taylor Townsend |
| Runner-up |  Mariana Duque Mariño |
| Score | 6–2, 2–6, 6–1 |
Kristie Ahn was the defending champion but lost in the first round to Barbara Haas.
Taylor Townsend won the title after defeating Mariana Duque Mariño 6–2, 2–6, 6–1 in the final.
Jennifer Brady (first round) Sofia Kenin (quarterfinals) Kristie Ahn (first round) Taylor Townsend (champion) Mariana Duque Mariño (final)
Sofya Zhuk (first round) Jamie Loeb (second round)
Lizette Cabrera (quarterfinals)| Semifinals | Final | ||||||||||||
 Sesil Karatantcheva | 6 | 3 | 2 | ||||||||||
| 4 | Taylor Townsend | 4 | 6 | 6 | |||||||||
| 4 | Taylor Townsend | 6 | 2 | 6 | |||||||||
| 5 | Mariana Duque Mariño | 2 | 6 | 1 | |||||||||
| Q | Francesca Di Lorenzo | 2 | 0 | ||||||||||
| 5 | Mariana Duque Mariño | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | J Brady | 5 | 0 | ||||||||||||||||||||||||
| S Karatantcheva | 7 | 6 | S Karatantcheva | 6 | 6 | ||||||||||||||||||||||
 O Ianchuk | 66 | 6 | 63 |  R Ozaki | 3 | 2 | |||||||||||||||||||||
| R Ozaki | 78 | 0 | 77 | S Karatantcheva | 6 | 6 | |||||||||||||||||||||
| G Min | 5 | 1 | 8 | L Cabrera | 1 | 3 | |||||||||||||||||||||
| P Hon | 7 | 6 | P Hon | 2 | 77 | 1 | |||||||||||||||||||||
| Q |  D Khazaniuk | 0 | 1r | 8 | L Cabrera | 6 | 65 | 6 | |||||||||||||||||||
| 8 | L Cabrera | 6 | 4 | S Karatantcheva | 6 | 3 | 2 | ||||||||||||||||||||
| 4 | T Townsend | 6 | 6 | 4 | T Townsend | 4 | 6 | 6 | |||||||||||||||||||
 U Eikeri | 1 | 4 | 4 | T Townsend | 6 | 77 | |||||||||||||||||||||
| WC | A Kratzer | 6 | 6 | WC | A Kratzer | 4 | 60 | ||||||||||||||||||||
| A Kalinina | 2 | 4 | 4 | T Townsend | 6 | 3 | 6 | ||||||||||||||||||||
 S Soler Espinosa | 3 | 6 | 6 | S Soler Espinosa | 3 | 6 | 4 | ||||||||||||||||||||
| I Falconi | 6 | 3 | 1 | S Soler Espinosa | 6 | 6 | |||||||||||||||||||||
| Q |  M Partaud | 6 | 6 | Q | M Partaud | 1 | 2 | ||||||||||||||||||||
| 6 | S Zhuk | 0 | 2 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | J Loeb | 3 | 6 | 6 | |||||||||||||||||||||||
| UM Arconada | 6 | 4 | 1 | 7 | J Loeb | 66 | 4 | ||||||||||||||||||||
| Q | F Di Lorenzo | 6 | 6 | Q | F Di Lorenzo | 78 | 6 | ||||||||||||||||||||
| K Day | 2 | 0 | Q | F Di Lorenzo | 6 | 6 | |||||||||||||||||||||
| Q |  C Rosatello | 6 | 6 |  B Haas | 4 | 1 | |||||||||||||||||||||
 J Cristian | 3 | 3 | Q | C Rosatello | 6 | 3 | 3 | ||||||||||||||||||||
| B Haas | 6 | 6 | B Haas | 2 | 6 | 6 | |||||||||||||||||||||
| 3 | K Ahn | 1 | 3 | Q | F Di Lorenzo | 2 | 0 | ||||||||||||||||||||
| 5 | M Duque Mariño | 5 | 6 | 6 | 5 | M Duque Mariño | 6 | 6 | |||||||||||||||||||
| V Duval | 7 | 3 | 0 | 5 | M Duque Mariño | 6 | 3 | 77 | |||||||||||||||||||
| WC | K Stewart | 7 | 4 | 5 | L Chirico | 2 | 6 | 64 | |||||||||||||||||||
| L Chirico | 5 | 6 | 7 | 5 | M Duque Mariño | 6 | 6 | ||||||||||||||||||||
| J Grabher | 7 | 6 | 2 | S Kenin | 4 | 1 | |||||||||||||||||||||
| WC | S Chang | 5 | 4 | J Grabher | 1 | 6 | 0r | ||||||||||||||||||||
| I Bara | 5 | 6 | 3 | 2 | S Kenin | 6 | 4 | 2 | |||||||||||||||||||
| 2 | S Kenin | 7 | 4 | 6 | |||||||||||||||||||||||
Monica Niculescu was the defending champion, but retired in the quarterfinals against Carla Suárez Navarro.
Klára Zakopalová won the title, defeating Garbiñe Muguruza in the final, 4–6, 7–5, 6–0.
Maria Sanchez and Taylor Townsend were the defending champions, but Townsend decided not to participate this year.
Sara Errani was the defending champion, but chose to compete in Dubai instead.
Samantha Crawford was the defending champion, but lost to Sofia Kenin in the first round.
Sloane Stephens was the defending champion, but could not participate this year as she was recovering from a left foot surgery.
Johanna Konta defeated Caroline Wozniacki in the final, 6–4, 6–3 to win the women's singles tennis title at the 2017 Miami Open.
Rebecca Peterson was the defending champion, but chose not to participate.
This was the first edition of the tournament.
Beatriz Haddad Maia was the defending champion, but chose not to participate.
This was the first edition of the tournament.
This was the first edition of the tournament.
Sloane Stephens defeated Jeļena Ostapenko in the final, 7–6(7–5), 6–1 to win the women's singles tennis title at the 2018 Miami Open. It was Stephens' sixth career singles title, first Premier Mandatory title, and first title since winning the US Open back in September. By virtue of her victory, Stephens also made her debut in the Top 10, at No. 9.
Olga Govortsova was the defending champion, but chose to compete in Pelham instead.
Madison Brengle was the defending champion but lost in the second round to Mari Osaka.
Madison Brengle was the defending champion but lost in the final to Taylor Townsend, 0–6 4–6.
Chuang Chia-jung and Renata Voráčová were the defending champions, however Chuang chose not to participate. Voráčová partnered Xenia Knoll but lost in the quarterfinals to Ysaline Bonaventure and Sara Sorribes Tormo.
Mihaela Buzărnescu was the defending champion, but chose to participate in Nottingham instead.
Sachia Vickery was the defending champion, but chose not to participate.
Mariana Duque Mariño was the defending champion, but she had retired from professional tennis earlier in the year.
Taylor Townsend was the defending champion, but chose not to participate as she is on maternity leave.