# 1998 Great American Insurance ATP Championships – Singles

Patrick Rafter defeated the defending champion Pete Sampras in the final, 1–6, 7–6$^{(7–2)}$, 6–4 to win the singles tennis title at the 1998 Cincinnati Masters.

## Seeds

The top eight seeds received a bye to the second round.
* Pete Sampras (final)
* Marcelo Ríos (second round)
* Petr Korda (quarterfinals)
* Carlos Moyà (second round)
* Patrick Rafter (champion)
* Jonas Björkman (second round)
* Yevgeny Kafelnikov (semifinals)
* Richard Krajicek (third round)
* Álex Corretja (second round)
* Andre Agassi (second round)
* Tim Henman (first round)
* Álbert Costa (second round)
* Alberto Berasategui (first round)
* Goran Ivanišević (third round)
* Félix Mantilla (first round)
* Cédric Pioline (second round)

## 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 | Final |
| 1 | Pete Sampras | 7 | 2 | 6 | | | | | |
| | Magnus Larsson | 5 | 6 | 1 | | | | | |
| | Magnus Larsson | 5 | 6 | 1 | 1 | Pete Sampras | 6 | 6$^2$ | 4 |
| | | | | | 5 | Patrick Rafter | 1 | 7$^7$ | 6 |
| 5 | Patrick Rafter | 7 | 6 | | 5 | Patrick Rafter | 1 | 7$^7$ | 6 |
| 7 | Yevgeny Kafelnikov | 5 | 0 | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | P Sampras | 6 | 6 | | | | | | | | | |
| | M Damm | 6 | 3 | 6 | | M Damm | 4 | 2 | | | | | | | | | |
| | M Woodforde | 4 | 6 | 2 | | | | | | 1 | P Sampras | 7$^7$ | 6 | | | | |
| | J-M Gambill | 6 | 6 | | | | | | | | J-M Gambill | 6$^3$ | 3 | | | | |
| Q | O Delaître | 1 | 3 | | | J-M Gambill | 6$^5$ | 7$^7$ | 6 | | | | | | | | |
| | R Delgado | 6$^4$ | 3 | | 16 | C Pioline | 7$^7$ | 6$^5$ | 4 | | | | | | | | |
| 16 | C Pioline | 7$^7$ | 6 | | | | | | | | | | | 1 | P Sampras | 6 | 6 |
| 10 | A Agassi | 4 | 7$^7$ | 6 | | | | | | | | | | | V Spadea | 3 | 2 |
| | N Kiefer | 6 | 6$^3$ | 2 | 10 | A Agassi | 2 | 6 | 6$^2$ | | | | | | | | |
| | J Gimelstob | 6 | 6$^8$ | 2 | | V Spadea | 6 | 0 | 7$^7$ | | | | | | | | |
| | V Spadea | 3 | 7$^{10}$ | 6 | | | | | | | V Spadea | 6 | 6 | | | | |
| Q | A Clément | 4 | 3 | | | | | | | 8 | R Krajicek | 2 | 3 | | | | |
| Q | A Medvedev | 6 | 6 | | Q | A Medvedev | 3 | 7$^7$ | 3 | | | | | | | | |
| | | | | | 8 | R Krajicek | 6 | 6$^5$ | 6 | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | C Moyà | 4 | 2 | | | | | | | | |
| | N Escudé | 2 | 7$^7$ | 3 | Q | J Golmard | 6 | 6 | | | | | | | | |
| Q | J Golmard | 6 | 6$^2$ | 6 | | | | | | Q | J Golmard | 6$^5$ | 6$^2$ | | | |
| | T Johansson | 7$^7$ | 7 | | | | | | | | T Johansson | 7$^7$ | 7$^7$ | | | |
| | W Black | 6$^3$ | 5 | | | T Johansson | 5 | 6 | 7$^7$ | | | | | | | |
| | J Tarango | 7 | 6 | | | J Tarango | 7 | 2 | 6$^4$ | | | | | | | |
| 13 | A Berasategui | 5 | 2 | | | | | | | | | | | T Johansson | 4 | 6$^2$ |
| 12 | Á Costa | 1 | 6 | 6 | | | | | | | | | | M Larsson | 6 | 7$^7$ |
| Q | S Grosjean | 6 | 4 | 1 | 12 | Á Costa | 1 | 3 | | | | | | | | |
| | T Haas | 7$^7$ | 7$^7$ | | | T Haas | 6 | 6 | | | | | | | | |
| | J Courier | 6$^3$ | 6$^5$ | | | | | | | | T Haas | 4 | 4 | | | |
| | G Pozzi | 4 | 5 | | | | | | | | M Larsson | 6 | 6 | | | |
| | M Larsson | 6 | 7 | | | M Larsson | 6$^5$ | 6 | 6 | | | | | | | |
| | | | | | 6 | J Björkman | 7$^7$ | 2 | 3 | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | P Rafter | 6 | 6 | | | | | | | | | |
| Q | W Schranz | 6$^5$ | 7 | 4 | | G Raoux | 1 | 3 | | | | | | | | | |
| | G Raoux | 7$^7$ | 5 | 6 | | | | | 5 | P Rafter | 3 | 6 | 6 | | | | |
| | T Martin | 6 | 6 | | | | | | | T Martin | 6 | 3 | 2 | | | | |
| | F Santoro | 1 | 4 | | | T Martin | 6 | 6 | | | | | | | | | |
| | T Muster | 6 | 7 | | | T Muster | 3 | 4 | | | | | | | | | |
| 11 | T Henman | 4 | 5 | | | | | | | | | | | 5 | P Rafter | 6 | 7$^{10}$ |
| 14 | G Ivanišević | 6 | 0 | 6 | | | | | | | | | | 3 | P Korda | 4 | 6$^8$ |
| | A Ilie | 4 | 6 | 4 | 14 | G Ivanišević | 6 | 6 | | | | | | | | | |
| | B Black | 2 | 3 | | | M Philippoussis | 3 | 2 | | | | | | | | | |
| | M Philippoussis | 6 | 6 | | | | | | 14 | G Ivanišević | 7 | 4 | 5 | | | | |
| WC | S Campbell | 7 | 2 | 3 | | | | | 3 | P Korda | 5 | 6 | 7 | | | | |
| Q | M Ondruska | 5 | 6 | 6 | Q | M Ondruska | 2 | 3 | | | | | | | | | |
| | | | | | 3 | P Korda | 6 | 6 | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 7 | Y Kafelnikov | 6 | 4 | 6 | | | | | | | | |
| | T Woodbridge | 1 | 6 | 2 | | M Chang | 3 | 6 | 4 | | | | | | | | |
| | M Chang | 6 | 3 | 6 | | | | | | 7 | Y Kafelnikov | 6 | 6 | | | | |
| | S Draper | 6 | 4 | 7 | | | | | | | S Draper | 3 | 3 | | | | |
| | N Lapentti | 4 | 6 | 5 | | S Draper | 6 | 6$^5$ | 7$^7$ | | | | | | | | |
| WC | A O'Brien | 3 | 7$^7$ | 6$^7$ | 9 | Á Corretja | 3 | 7$^7$ | 6$^5$ | | | | | | | | |
| 9 | Á Corretja | 6 | 6$^3$ | 7$^9$ | | | | | | | | | | 7 | Y Kafelnikov | 6 | 6 |
| 15 | F Mantilla | 6$^5$ | 5 | | | | | | | | | | | | D Vacek | 4 | 4 |
| | W Ferreira | 7$^7$ | 7 | | | W Ferreira | 6$^5$ | 4 | | | | | | | | | |
| | J Siemerink | 1 | 6 | 7$^7$ | | J Siemerink | 7$^7$ | 6 | | | | | | | | | |
| | S Schalken | 6 | 1 | 6$^2$ | | | | | | | J Siemerink | 1 | 4 | | | | |
| | D Vacek | 6 | 3 | 7$^{10}$ | | | | | | | D Vacek | 6 | 6 | | | | |
| | J Stoltenberg | 2 | 6 | 6$^8$ | | D Vacek | 6 | 6 | | | | | | | | | |
| | | | | | 2 | M Ríos | 3 | 2 | | | | | | | | | |