2018 U.S. Men's Clay Court Championships
 |
| 2018 U.S. Men's Clay Court Championships | |
|---|---|
| Date | April 9 – 15 |
| Edition | 117th |
| Category | World Tour 250 |
| Draw | 28S/16D |
| Prize money | $557,050 |
| Surface | Clay |
| Location | Houston, TX, United States |
| Venue | River Oaks Country Club |
| 2017 Champions | |
| Singles | |
 Steve Johnson | |
| Doubles | |
 Julio Peralta /  Horacio Zeballos | |
The 2018 U.S. Men's Clay Court Championships (also known as the Fayez Sarofim & Co. U.S. Men's Clay Court Championships for sponsorship purposes) is a tennis tournament played on outdoor clay courts. It will be the 117th edition of the U.S. Men's Clay Court Championships, and an ATP World Tour 250 event on the 2018 ATP World Tour. It will take place at River Oaks Country Club in Houston, Texas, United States, from April 9 through April 15, 2018.
Singles main draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| USA
|
John Isner | 9 | 1 |
| USA
|
Sam Querrey | 14 | 2 |
| USA
|
Jack Sock | 16 | 3 |
 AUS
|
Nick Kyrgios | 24 | 4 |
 ESP
|
Fernando Verdasco | 36 | 5 |
| USA
|
Steve Johnson | 52 | 6 |
| USA
|
Ryan Harrison | 54 | 7 |
| USA
|
Tennys Sandgren | 56 | 8 |
- Rankings are as of April 2, 2018.
Other entrants
The following players received wildcards into the main draw:
The following players received entry via the qualifying draw:
Withdrawals
- Before the tournament
Kevin Anderson → replaced by 
Blaž Kavčič
Jérémy Chardy → replaced by 
Taro Daniel
Chung Hyeon → replaced by 
Bjorn Fratangelo
Lukáš Lacko → replaced by Tim Smyczek
Feliciano López → replaced by 
Henri Laaksonen
John Millman → replaced by Ernesto Escobedo
Doubles main draw entrants
Seeds
| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| USA
|
Bob Bryan | USA
|
Mike Bryan | 18 | 1 |
| USA
|
Ryan Harrison |  JPN
|
Ben McLachlan | 46 | 2 |
| CHI
|
Julio Peralta | ARG
|
Horacio Zeballos | 59 | 3 |
 MEX
|
Santiago González | USA
|
Donald Young | 86 | 4 |
- Rankings are as of April 2, 2018.
Other entrants
The following pairs received wildcards into the doubles main draw:
Champions
Singles
- vs.
Doubles
- / vs.
/
