U.S. Men's Clay Court Championships 2018
Steve Johnson won the title, beating Tennys Sandgren 7–6(2) 2–6 6–4 in the final.
Main draw 28 players
- 1🇺🇸John IsnerQuarterfinals · Lost to Steve Johnson
- 2🇺🇸Sam QuerreyRound of 16 · Lost to Guido Pella
- 3🇺🇸Jack SockQuarterfinals · Lost to Taylor Fritz
- 4🇦🇺Nick KyrgiosQuarterfinals · Lost to Ivo Karlovic
- 5🇪🇸Fernando VerdascoRound of 32 · Lost to Denis Kudla
- 6🇺🇸Steve Johnson#426Final · Champion
- 7🇺🇸Ryan HarrisonRound of 16 · Lost to Taylor Fritz
- 8🇺🇸Tennys SandgrenFinal · Lost to Steve Johnson
- 🇭🇷Ivo KarlovicSemifinals · Lost to Tennys Sandgren
- 🇺🇸Taylor Fritz#10Semifinals · Lost to Steve Johnson
- 🇦🇷Guido PellaQuarterfinals · Lost to Tennys Sandgren
- 🇺🇸Bjorn FratangeloRound of 16 · Lost to Nick Kyrgios
- Q🇺🇸Denis KudlaRound of 16 · Lost to Ivo Karlovic
- 🇺🇸Frances Tiafoe#8Round of 16 · Lost to Steve Johnson
- 🇨🇭Henri LaaksonenRound of 16 · Lost to John Isner
- 🇦🇷Horacio ZeballosRound of 16 · Lost to Jack Sock
- 🇦🇷Nicolas Kicker#336Round of 16 · Lost to Tennys Sandgren
- 🇸🇮Blaz KavcicRound of 32 · Lost to Tennys Sandgren
- 🇺🇸Donald YoungRound of 32 · Lost to Nicolas Kicker
- WCJAMDustin BrownRound of 32 · Lost to Henri Laaksonen
- 🇲🇽Ernesto EscobedoRound of 32 · Lost to Steve Johnson
- 🇦🇺Jordan ThompsonRound of 32 · Lost to Bjorn Fratangelo
- WC🇺🇸Mackenzie McDonald#262Round of 32 · Lost to Frances Tiafoe
- Q🇷🇸Miomir Kecmanovic#64Round of 32 · Lost to Ryan Harrison
- Q🇺🇸Stefan Kozlov#205Round of 32 · Lost to Guido Pella
- 🇯🇵Taro Daniel#172Round of 32 · Lost to Ivo Karlovic
- 🇺🇸Tim SmyczekRound of 32 · Lost to Taylor Fritz
- Q🇯🇵Yoshihito NishiokaRound of 32 · Lost to Horacio Zeballos