# 1998 International Tennis Championships – Singles

Andrew Ilie defeated Davide Sanguinetti 7–5, 6–4 to win the 1998 International Tennis Championships singles event. Jason Stoltenberg was the defending champion.

## Seeds

* Jason Stoltenberg (first round)
* Vincent Spadea (second round)
* Andrei Pavel (first round)
* Wayne Black (second round)
* Mikael Tillström (second round)
* Steve Campbell (second round)
* Álex Calatrava (first round)
* Davide Sanguinetti (final)

## 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 |
| | Andrew Ilie | 4 | 6 | 6 | | | | |
| | Justin Gimelstob | 6 | 1 | 4 | | | | |
| | Justin Gimelstob | 6 | 1 | 4 | | Andrew Ilie | 7 | 6 |
| | | | | | 8 | Davide Sanguinetti | 5 | 4 |
| | Johan van Herck | 3 | 4 | | 8 | Davide Sanguinetti | 5 | 4 |
| 8 | Davide Sanguinetti | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | J Stoltenberg | 4 | 5 | | | | | | | | | | | | | | | |
| Q | A Ilie | 6 | 7 | | Q | A Ilie | 3 | 6 | 6 | | | | | | | | | |
| | M Craca | 7$^7$ | 4 | 3 | Q | R Agénor | 6 | 4 | 1 | | | | | | | | | |
| Q | R Agénor | 6$^4$ | 6 | 6 | | | | | | | A Ilie | 6 | 6$^3$ | 6 | | | | |
| Q | D Flach | 0 | 3 | | | | | | | | S Grosjean | 3 | 7$^7$ | 3 | | | | |
| | S Grosjean | 6 | 6 | | | S Grosjean | 6 | 7$^7$ | | | | | | | | | | |
| | D van Scheppingen | 6 | 6 | | | D van Scheppingen | 1 | 6$^2$ | | | | | | | | | | |
| 7 | Á Calatrava | 4 | 4 | | | | | | | | | | | | A Ilie | 4 | 6 | 6 |
| 4 | W Black | 6 | 6 | | | | | | | | | | | | J Gimelstob | 6 | 1 | 4 |
| WC | M Merklein | 3 | 2 | | 4 | W Black | 1 | 2 | | | | | | | | | | |
| | J Gimelstob | 6 | 6 | | | J Gimelstob | 6 | 6 | | | | | | | | | | |
| | G Stafford | 2 | 4 | | | | | | | | J Gimelstob | 6 | 4 | 6 | | | | |
| Q | X Malisse | 6 | 6 | | | | | | | Q | X Malisse | 3 | 6 | 3 | | | | |
| | J van Lottum | 2 | 2 | | Q | X Malisse | 6 | 5 | 6 | | | | | | | | | |
| | S Stolle | 4 | 6 | 1 | 5 | M Tillström | 4 | 7 | 3 | | | | | | | | | |
| 5 | M Tillström | 6 | 3 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | S Campbell | 6 | 7 | | | | | | | | | | | | | |
| | A Clément | 4 | 5 | | 6 | S Campbell | 5 | 0 | | | | | | | | |
| | J Marín | 6$^3$ | 6 | 2 | | J van Herck | 7 | 6 | | | | | | | | |
| | J van Herck | 7$^7$ | 3 | 6 | | | | | | J van Herck | 6 | 6 | | | | |
| | M Tebbutt | 6 | 6 | | | | | | | M Tebbutt | 1 | 4 | | | | |
| WC | M Jensen | 3 | 2 | | | M Tebbutt | 6 | 6 | | | | | | | | |
| | F Squillari | 4 | 7 | 6 | | F Squillari | 3 | 3 | | | | | | | | |
| 3 | A Pavel | 6 | 5 | 3 | | | | | | | | | | J van Herck | 3 | 4 |
| 8 | D Sanguinetti | 3 | 6 | 7 | | | | | | | | | 8 | D Sanguinetti | 6 | 6 |
| | S Sargsian | 6 | 3 | 5 | 8 | D Sanguinetti | 6 | 6 | | | | | | | | |
| | C Vinck | 6$^5$ | 1 | | WC | P McEnroe | 3 | 3 | | | | | | | | |
| WC | P McEnroe | 7$^7$ | 6 | | | | | | 8 | D Sanguinetti | 6 | 6 | | | | |
| | C Ruud | 3 | 6 | 1 | | | | | | R Delgado | 4 | 4 | | | | |
| | R Delgado | 6 | 4 | 6 | | R Delgado | 6 | 6 | | | | | | | | |
| | A O'Brien | 6 | 1 | 4 | 2 | V Spadea | 4 | 2 | | | | | | | | |
| 2 | V Spadea | 2 | 6 | 6 | | | | | | | | | | | | |