# 2018 Sarasota Open – Singles

Frances Tiafoe was the defending champion but chose not to defend his title.
Hugo Dellien won the title after defeating Facundo Bagnis 2–6, 6–4, 6–2 in the final.

## Seeds

* Taro Daniel (first round)
* Peter Polansky (second round)
* Donald Young (second round)
* Mackenzie McDonald (first round)
* Henri Laaksonen (quarterfinals)
* Thomaz Bellucci (second round)
* Michael Mmoh (second round)
* Blaž Rola (second 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 |
| | Reilly Opelka | 2$^r$ | | | | | |
| | Facundo Bagnis | 5 | | | | | |
| | Facundo Bagnis | 5 | | Facundo Bagnis | 6 | 4 | 2 |
| | | | | Hugo Dellien | 2 | 6 | 6 |
| | Hugo Dellien | 6 | 6 | Hugo Dellien | 2 | 6 | 6 |
| SE | Juan Ignacio Londero | 3 | 3 | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals |
| 1 | T Daniel | 6 | 2 | 4 | | | | | | | | | | | | |
| | G Clezar | 3 | 6 | 6 | | G Clezar | 7$^7$ | 3 | 6 | | | | | | | |
| | E King | 7 | 6 | | | E King | 6$^5$ | 6 | 2 | | | | | | | |
| WC | T Zink | 5 | 1 | | | | | | | | G Clezar | 7 | 4 | 4 | | |
| | R Opelka | 4 | 7$^7$ | 7 | | | | | | | R Opelka | 5 | 6 | 6 | | |
| | M Kecmanović | 6 | 6$^5$ | 5 | | R Opelka | 7$^8$ | 6 | | | | | | | | |
| | A Arnaboldi | 6 | 6$^6$ | 3 | 8 | B Rola | 6$^6$ | 3 | | | | | | | | |
| 8 | B Rola | 3 | 7$^8$ | 6 | | | | | | | | | | | R Opelka | 2$^r$ |
| 4/WC | M McDonald | 6 | 3 | 2 | | | | | | | | | | | F Bagnis | 5 |
| Q | J Clarke | 3 | 6 | 6 | Q | J Clarke | 6$^2$ | 6 | 7$^7$ | | | | | | | |
| | A Santillan | 6 | 3 | 6 | | A Santillan | 7$^7$ | 4 | 6$^1$ | | | | | | | |
| | D Köpfer | 3 | 6 | 2 | | | | | | Q | J Clarke | 6$^4$ | 4 | | | |
| | F Bagnis | 6 | 6 | | | | | | | | F Bagnis | 7$^7$ | 6 | | | |
| LL | J Choinski | 2 | 4 | | | F Bagnis | 3 | 6 | 7 | | | | | | | |
| WC | JC Aragone | 4 | 1 | | 6 | T Bellucci | 6 | 4 | 5 | | | | | | | |
| 6 | T Bellucci | 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 | M Mmoh | 6 | 6 | | | | | | | | | | | | | | |
| WC | S Korda | 2 | 4 | | 7 | M Mmoh | 3 | 3 | | | | | | | | | |
| | H Dellien | 6 | 3 | | | H Dellien | 6 | 6 | | | | | | | | | |
| | C Garín | 1 | 2$^r$ | | | | | | | H Dellien | 5 | 6 | 7$^8$ | | | | |
| | M Krueger | 4 | 3 | | | | | | | S Kozlov | 7 | 1 | 6$^6$ | | | | |
| | S Kozlov | 6 | 6 | | | S Kozlov | 6 | 6 | | | | | | | | | |
| Q | F Coria | 4 | 6$^7$ | | 3 | D Young | 4 | 4 | | | | | | | | | |
| 3 | D Young | 6 | 7$^9$ | | | | | | | | | | | | H Dellien | 6 | 6 |
| 5 | H Laaksonen | 2 | 7 | 6 | | | | | | | | | | SE | JI Londero | 3 | 3 |
| Q | F Dancevic | 6 | 5 | 0 | 5 | H Laaksonen | 6 | 6 | | | | | | | | | |
| | M Polmans | 6 | 6 | | | M Polmans | 2 | 4 | | | | | | | | | |
| Q | K Uchida | 2 | 1 | | | | | | 5 | H Laaksonen | 1 | 0 | | | | | |
| | C Harrison | 4 | 1 | | | | | | SE | JI Londero | 6 | 6 | | | | | |
| SE | JI Londero | 6 | 6 | | SE | JI Londero | 6 | 6 | | | | | | | | | |
| SE | F Argüello | 4 | 6 | 1$^r$ | 2 | P Polansky | 4 | 3 | | | | | | | | | |
| 2 | P Polansky | 6 | 2 | 4 | | | | | | | | | | | | | |