# 2018 Fairfield Challenger – Singles

Mackenzie McDonald was the defending champion but chose not to defend his title.
Bjorn Fratangelo won the title after defeating Alex Bolt 6–4, 6–3 in the final.

## Seeds

* Jordan Thompson (quarterfinals)
* Lloyd Harris (quarterfinals)
* Noah Rubin (second round)
* Reilly Opelka (first round)
* Adrián Menéndez Maceiras (semifinals, retired)
* Casper Ruud (semifinals)
* Ivo Karlović (first round)
* Alex Bolt (final)

## 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 |
| | Bjorn Fratangelo | 6 | 6 | | | | |
| 6 | Casper Ruud | 2 | 2 | | | | |
| 6 | Casper Ruud | 2 | 2 | | Bjorn Fratangelo | 6 | 6 |
| | | | | 8 | Alex Bolt | 4 | 3 |
| 5 | Adrián Menéndez Maceiras | 5 | 6$^r$ | 8 | Alex Bolt | 4 | 3 |
| 8 | Alex Bolt | 7 | 6 | | | | |

### 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 | J Thompson | 7$^7$ | 6 | | | | | | | | | | | | | | |
| | J Clarke | 6$^3$ | 1 | | 1 | J Thompson | 6$^5$ | 6 | 6 | | | | | | | | |
| WC | A Rybakov | 6$^8$ | 3 | | SE | M Janvier | 7$^7$ | 3 | 0 | | | | | | | | |
| SE | M Janvier | 7$^{10}$ | 6 | | | | | | | 1 | J Thompson | 1 | 4 | | | | |
| | B Fratangelo | 3 | 6 | 6 | | | | | | | B Fratangelo | 6 | 6 | | | | |
| | J-P Smith | 6 | 2 | 4 | | B Fratangelo | 7 | 6 | | | | | | | | | |
| | D Köpfer | 6 | 6 | | | D Köpfer | 5 | 3 | | | | | | | | | |
| 7 | I Karlović | 4 | 4 | | | | | | | | | | | | B Fratangelo | 6 | 6 |
| 4 | R Opelka | 6$^2$ | 6$^5$ | | | | | | | | | | | 6 | C Ruud | 2 | 2 |
| | L Miedler | 7$^7$ | 7$^7$ | | | L Miedler | 4 | 1 | | | | | | | | | |
| Q | S Fanselow | 6 | 5 | 6 | Q | S Fanselow | 6 | 6 | | | | | | | | | |
| | C İlkel | 2 | 7 | 0 | | | | | | Q | S Fanselow | 1 | 0 | | | | |
| | M Polmans | 4 | 7$^9$ | 3 | | | | | | 6 | C Ruud | 6 | 6 | | | | |
| | JC Aragone | 6 | 6$^7$ | 6 | | JC Aragone | 1 | 6$^4$ | | | | | | | | | |
| Q | K King | 3 | 4 | | 6 | C Ruud | 6 | 7$^7$ | | | | | | | | | |
| 6 | C Ruud | 6 | 6 | | | | | | | | | | | | | | |

### 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 |
| 5 | A Menéndez Maceiras | 7$^7$ | 3 | 6 | | | | | | | | | | | | | |
| LL | M Krueger | 6$^5$ | 6 | 1 | 5 | A Menéndez Maceiras | 6 | 6 | | | | | | | | | |
| | H Laaksonen | 6 | 4 | 1 | | T de Bakker | 4 | 3 | | | | | | | | | |
| | T de Bakker | 4 | 6 | 6 | | | | | | 5 | A Menéndez Maceiras | 6 | 6 | | | | |
| Q | E King | 6 | 1 | 4 | | | | | | WC | J. J. Wolf | 0 | 4 | | | | |
| WC | J. J. Wolf | 2 | 6 | 6 | WC | J. J. Wolf | 6 | 6 | | | | | | | | | |
| WC | A Geller | 3 | 4 | | 3 | N Rubin | 3 | 2 | | | | | | | | | |
| 3 | N Rubin | 6 | 6 | | | | | | | | | | | 5 | A Menéndez Maceiras | 5 | 6$^r$ |
| 8 | A Bolt | 7 | 3 | 6 | | | | | | | | | | 8 | A Bolt | 7 | 6 |
| | T Kokkinakis | 5 | 6 | 4 | 8 | A Bolt | 7$^8$ | 6$^3$ | 7$^7$ | | | | | | | | |
| WC | C Altamirano | 7$^7$ | 0 | | WC | C Altamirano | 6$^6$ | 7$^7$ | 6$^5$ | | | | | | | | |
| | D Evans | 6$^2$ | 0$^r$ | | | | | | | 8 | A Bolt | 6 | 6 | | | | |
| Q | T Paul | 6 | 6 | | | | | | | 2 | L Harris | 3 | 4 | | | | |
| Alt | D King | 2 | 2 | | Q | T Paul | 6 | 5 | 5 | | | | | | | | |
| | D Young | 6$^{12}$ | 6 | 5 | 2 | L Harris | 4 | 7 | 7 | | | | | | | | |
| 2 | L Harris | 7$^{14}$ | 4 | 7 | | | | | | | | | | | | | |