Auckland Open 2018
Roberto Bautista Agut won the title, beating Juan Martin del Potro 6–1 4–6 7–5 in the final.
Main draw 28 players
- 1🇺🇸Jack SockRound of 16 · Lost to Peter Gojowczyk
- 2🇦🇷Juan Martin del PotroFinal · Lost to Roberto Bautista Agut
- 3🇺🇸Sam QuerreyRound of 16 · Lost to Jiri Vesely
- 4🇺🇸John IsnerRound of 16 · Lost to Hyeon Chung
- 5🇪🇸Roberto Bautista Agut#239Final · Champion
- 6🇺🇾Pablo CuevasRound of 16 · Lost to Karen Khachanov
- 7🇪🇸David FerrerSemifinals · Lost to Juan Martin del Potro
- 🇳🇱Robin HaaseSemifinals · Lost to Roberto Bautista Agut
- 🇰🇷Hyeon ChungQuarterfinals · Lost to David Ferrer
- 🇨🇿Jiri VeselyQuarterfinals · Lost to Roberto Bautista Agut
- 🇷🇺Karen Khachanov#24Quarterfinals · Lost to Juan Martin del Potro
- 🇩🇪Peter GojowczykQuarterfinals · Lost to Robin Haase
- 🇨🇦Denis Shapovalov#50Round of 16 · Lost to Juan Martin del Potro
- 🇵🇹Joao SousaRound of 16 · Lost to David Ferrer
- LL🇸🇰Lukas LackoRound of 16 · Lost to Robin Haase
- 🇺🇸Steve Johnson#426Round of 16 · Lost to Roberto Bautista Agut
- Q🇳🇴Casper Ruud#18Round of 32 · Lost to Robin Haase
- 🇺🇸Donald YoungRound of 32 · Lost to Joao Sousa
- LL🇮🇹Liam CaruanaRound of 32 · Lost to Steve Johnson
- WC🇳🇿Michael VenusRound of 32 · Lost to Roberto Bautista Agut
- Q🇲🇩Radu AlbotRound of 32 · Lost to Jiri Vesely
- Q🇧🇷Rogerio Dutra SilvaRound of 32 · Lost to Denis Shapovalov
- WC🇬🇷Stefanos Tsitsipas#36Round of 32 · Lost to Lukas Lacko
- LL🇯🇵Taro Daniel#172Round of 32 · Lost to Pablo Cuevas
- LL🇺🇸Tennys SandgrenRound of 32 · Lost to Hyeon Chung
- Q🇺🇸Tim SmyczekRound of 32 · Lost to Peter Gojowczyk
- WC🇨🇳Yibing Wu#105Round of 32 · Lost to David Ferrer
- 🇯🇵Yuichi SugitaRound of 32 · Lost to Karen Khachanov