# 2018 ASB Classic – Men's singles

Jack Sock was the defending champion, but lost in the second round to Peter Gojowczyk.
Roberto Bautista Agut won the title, defeating Juan Martín del Potro in the final, 6–1, 4–6, 7–5.

## Seeds

The top four seeds received a bye into the second round.
* Jack Sock (second round)
* Juan Martín del Potro (final)
* Sam Querrey (second round)
* John Isner (second round)
* Roberto Bautista Agut (champion)
* Pablo Cuevas (second round)
* David Ferrer (semifinals)
* Andrey Rublev (withdrew)

## 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 | Semifinals | Final | Final | Final | Final | Final |
| | Robin Haase | 7$^9$ | 6$^3$ | 6$^5$ | | | | | |
| 5 | Roberto Bautista Agut | 6$^7$ | 7$^7$ | 7$^7$ | | | | | |
| 5 | Roberto Bautista Agut | 6$^7$ | 7$^7$ | 7$^7$ | 5 | Roberto Bautista Agut | 6 | 4 | 7 |
| | | | | | 2 | Juan Martín del Potro | 1 | 6 | 5 |
| 7 | David Ferrer | 4 | 4 | | 2 | Juan Martín del Potro | 1 | 6 | 5 |
| 2 | Juan Martín del Potro | 6 | 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 | Semifinals |
| | | | | | 1 | J Sock | 3 | 3 | | | | | | | | | | |
| Q | T Smyczek | 3 | 6 | 3 | | P Gojowczyk | 6 | 6 | | | | | | | | | | |
| | P Gojowczyk | 6 | 4 | 6 | | | | | | | P Gojowczyk | 4 | 4 | | | | | |
| | R Haase | 0 | 7$^8$ | 6 | | | | | | | R Haase | 6 | 6 | | | | | |
| Q | C Ruud | 6 | 6$^6$ | 3 | | R Haase | 7$^7$ | 6 | | | | | | | | | | |
| WC | S Tsitsipas | 3 | 7$^7$ | 3 | LL | L Lacko | 6$^4$ | 3 | | | | | | | | | | |
| LL | L Lacko | 6 | 6$^5$ | 6 | | | | | | | | | | | R Haase | 7$^9$ | 6$^3$ | 6$^5$ |
| | | | | | | | | | | | | | | 5 | R Bautista Agut | 6$^7$ | 7$^7$ | 7$^7$ |
| | | | | | 3 | S Querrey | 4 | 7$^{12}$ | 6$^5$ | | | | | | | | | |
| | J Veselý | 3 | 6 | 7$^9$ | | J Veselý | 6 | 6$^{10}$ | 7$^7$ | | | | | | | | | |
| Q | R Albot | 6 | 1 | 6$^7$ | | | | | | | J Veselý | 6$^1$ | 2 | | | | | |
| | S Johnson | 7 | 7$^7$ | | | | | | | 5 | R Bautista Agut | 7$^7$ | 6 | | | | | |
| LL | L Caruana | 5 | 6$^4$ | | | S Johnson | 6 | 2 | 1 | | | | | | | | | |
| WC | M Venus | 2 | 1 | | 5 | R Bautista Agut | 2 | 6 | 6 | | | | | | | | | |
| 5 | R Bautista Agut | 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 |
| 7 | D Ferrer | 7$^9$ | 6 | | | | | | | | | | | | | | |
| WC | Y Wu | 6$^7$ | 4 | | 7 | D Ferrer | 6 | 6 | | | | | | | | | |
| | D Young | 7$^{10}$ | 4 | 2 | | J Sousa | 2 | 2 | | | | | | | | | |
| | J Sousa | 6$^8$ | 6 | 6 | | | | | | 7 | D Ferrer | 6 | 6 | | | | |
| | H Chung | 6 | 5 | 6 | | | | | | | H Chung | 3 | 2 | | | | |
| LL | T Sandgren | 3 | 7 | 3 | | H Chung | 7$^7$ | 5 | 6 | | | | | | | | |
| | | | | | 4 | J Isner | 6$^3$ | 7 | 2 | | | | | | | | |
| | | | | | | | | | | | | | | 7 | D Ferrer | 4 | 4 |
| 6 | P Cuevas | 6 | 6 | | | | | | | | | | | 2 | JM del Potro | 6 | 6 |
| LL | T Daniel | 3 | 2 | | 6 | P Cuevas | 2 | 6$^4$ | | | | | | | | | |
| | Y Sugita | 1 | 6 | 4 | | K Khachanov | 6 | 7$^7$ | | | | | | | | | |
| | K Khachanov | 6 | 3 | 6 | | | | | | | K Khachanov | 6$^4$ | 3 | | | | |
| | D Shapovalov | 6 | 6 | | | | | | | 2 | JM del Potro | 7$^7$ | 6 | | | | |
| Q | R Dutra Silva | 3 | 2 | | | D Shapovalov | 2 | 4 | | | | | | | | | |
| | | | | | 2 | JM del Potro | 6 | 6 | | | | | | | | | |

## Qualifying
### Seeds

* Radu Albot (qualified)
* Lukáš Lacko (qualifying competition, lucky loser)
* Tennys Sandgren (qualifying competition, lucky loser)
* Blaž Kavčič (first round)
* Taro Daniel (qualifying competition, lucky loser)
* Rogério Dutra Silva (qualified)
* Tim Smyczek (qualified)
* Casper Ruud (qualified)

### Qualifiers

* Radu Albot
* Rogério Dutra Silva
* Casper Ruud
* Tim Smyczek

### Lucky losers

* Lukáš Lacko
* Tennys Sandgren
* Taro Daniel
* Liam Caruana

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Radu Albot | 7 | 6 | | | | | |
| | Brydan Klein | 5 | 4 | | | | | |
| | Brydan Klein | 5 | 4 | 1 | Radu Albot | 5 | 6 | 6 |
| | | | | 5 | Taro Daniel | 7 | 3 | 4 |
| WC | Ajeet Rai | 1 | 2 | 5 | Taro Daniel | 7 | 3 | 4 |
| 5 | Taro Daniel | 6 | 6 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Lukáš Lacko | 6 | 7 | | | | | |
| | Rubin Statham | 1 | 5 | | | | | |
| | Rubin Statham | 1 | 5 | | 2 | Lukáš Lacko | 5 | 4 |
| | | | | | 6 | Rogério Dutra Silva | 7 | 6 |
| | Sam Barry | 2 | 6 | 5 | 6 | Rogério Dutra Silva | 7 | 6 |
| 6 | Rogério Dutra Silva | 6 | 3 | 7 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Tennys Sandgren | 7$^7$ | 7$^7$ | | | | | | |
| | Michał Przysiężny | 6$^4$ | 6$^4$ | | | | | | |
| | Michał Przysiężny | 6$^4$ | 6$^4$ | | 3 | Tennys Sandgren | 7$^8$ | 6$^5$ | 4 |
| | | | | | 8 | Casper Ruud | 6$^6$ | 7$^7$ | 6 |
| | Stéphane Robert | 3 | 7$^7$ | 6$^3$ | 8 | Casper Ruud | 6$^6$ | 7$^7$ | 6 |
| 8 | Casper Ruud | 6 | 6$^3$ | 7$^7$ | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Blaž Kavčič | 3 | 4 | | | | |
| | Liam Caruana | 6 | 6 | | | | |
| | Liam Caruana | 6 | 6 | | Liam Caruana | 4 | 2 |
| | | | | 7 | Tim Smyczek | 6 | 6 |
| WC | Finn Reynolds | 1 | 2 | 7 | Tim Smyczek | 6 | 6 |
| 7 | Tim Smyczek | 6 | 6 | | | | |