# 1998 U.S. Men's Clay Court Championships – Singles
## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Michael Chang (final)
* Jason Stoltenberg (first round)
* Jim Courier (champion)
* Vincent Spadea (first round)
* Gianluca Pozzi (second round)
* Wayne Black (first round)
* Grant Stafford (second round)
* Juan Antonio Marín (first round, retired)

## 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
| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | M Chang | 6 | 3 | 7$^7$ | | | | | | | | | | | | | | | | | | | | |
| | R Delgado | 4 | 6 | 6$^1$ | 1 | M Chang | 7$^7$ | 6 | | | | | | | | | | | | | | | | |
| | C Ruud | 3 | 4 | | | F Squillari | 6$^2$ | 4 | | | | | | | | | | | | | | | | |
| | F Squillari | 6 | 6 | | | | | | | 1 | M Chang | 6 | 6 | | | | | | | | | | | |
| Q | M Carlsson | 6 | 6 | | | | | | | Q | M Carlsson | 3 | 1 | | | | | | | | | | | |
| Q | P Fredriksson | 4 | 2 | | Q | M Carlsson | 6 | 3 | 6 | | | | | | | | | | | | | | | |
| | J Van Herck | 3 | 1 | | 7 | G Stafford | 4 | 6 | 2 | | | | | | | | | | | | | | | |
| 7 | G Stafford | 6 | 6 | | | | | | | | | | | | 1 | M Chang | 6 | 6 | | | | | | |
| 4 | V Spadea | 4 | 2 | | | | | | | | | | | | | M Tillström | 3 | 4 | | | | | | |
| Q | A Ilie | 6 | 6 | | Q | A Ilie | 6 | 6 | | | | | | | | | | | | | | | | |
| | L Arnold Ker | 7 | 6 | | | L Arnold Ker | 3 | 4 | | | | | | | | | | | | | | | | |
| | J van Lottum | 5 | 2 | | | | | | | Q | A Ilie | 3 | 3 | | | | | | | | | | | |
| | M Tillström | 6 | 6 | | | | | | | | M Tillström | 6 | 6 | | | | | | | | | | | |
| | C Vinck | 3 | 2 | | | M Tillström | 6 | 6 | | | | | | | | | | | | | | | | |
| | S Sargsian | 3 | 6$^4$ | | 5 | G Pozzi | 4 | 3 | | | | | | | | | | | | | | | | |
| 5 | G Pozzi | 6 | 7$^7$ | | | | | | | | | | | | | | | | | 1 | Michael Chang | 5 | 6 | 5 |
| 6 | W Black | 6$^5$ | 2 | | | | | | | | | | | | | | | | | 3 | Jim Courier | 7 | 3 | 7 |
| | J-M Gambill | 7$^7$ | 6 | | | J-M Gambill | 4 | 4 | | | | | | | | | | | | | | | | |
| WC | D Witt | 3 | 1 | | | M Craca | 6 | 6 | | | | | | | | | | | | | | | | |
| | M Craca | 6 | 6 | | | | | | | | M Craca | 0 | 3 | | | | | | | | | | | |
| | D Sanguinetti | 3 | 6 | 2 | | | | | | 3 | J Courier | 6 | 6 | | | | | | | | | | | |
| Q | D van Scheppingen | 6 | 1 | 6 | Q | D van Scheppingen | 2 | 1 | | | | | | | | | | | | | | | | |
| WC | G Grant | 1 | 2 | | 3 | J Courier | 6 | 6 | | | | | | | | | | | | | | | | |
| 3 | J Courier | 6 | 6 | | | | | | | | | | | | 3 | J Courier | 4 | 6 | 6 | | | | | |
| 8 | J A Marín | 3 | 0$^r$ | | | | | | | | | | | | | A Pavel | 6 | 3 | 2 | | | | | |
| | Á Calatrava | 6 | 2 | | | Á Calatrava | 4 | 7$^7$ | | | | | | | | | | | | | | | | |
| | H Gumy | 3 | 6 | 6 | | H Gumy | 6 | 6$^5$ | r | | | | | | | | | | | | | | | |
| | R Reneberg | 6 | 4 | 0 | | | | | | | Á Calatrava | 4 | 6 | 4 | | | | | | | | | | |
| | S Draper | 5 | 0 | | | | | | | | A Pavel | 6 | 2 | 6 | | | | | | | | | | |
| | A Pavel | 7 | 6 | | | A Pavel | 7$^7$ | 6 | | | | | | | | | | | | | | | | |
| | J Gimelstob | 3 | 6 | 6 | | J Gimelstob | 6$^5$ | 2 | | | | | | | | | | | | | | | | |
| 2 | J Stoltenberg | 6 | 3 | 4 | | | | | | | | | | | | | | | | | | | | |