# 1998 BMW Open – Singles

Mark Philippoussis was the defending champion, but lost in the second round this year.
Thomas Enqvist won the title, defeating Andre Agassi 6–7$^{(4–7)}$, 7–6$^{(8–6)}$, 6–3 in the final.

## Seeds

* Greg Rusedski (first round)
* Jonas Björkman (quarterfinals)
* Gustavo Kuerten (second round)
* Tim Henman (second round)
* Mark Philippoussis (second round)
* Sergi Bruguera (first round)
* Thomas Enqvist (champion)
* Andre Agassi (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 | Final | Final | Final | Final | Final |
| 7 | Thomas Enqvist | 6 | 6 | | | | | |
| | Magnus Gustafsson | 3 | 4 | | | | | |
| | Magnus Gustafsson | 3 | 4 | 7 | Thomas Enqvist | 6$^4$ | 7$^8$ | 6 |
| | | | | 8 | Andre Agassi | 7$^7$ | 6$^6$ | 3 |
| | Galo Blanco | 4 | 4 | 8 | Andre Agassi | 7$^7$ | 6$^6$ | 3 |
| 8 | Andre Agassi | 6 | 6 | | | | | |

### Top 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 |
| 1 | G Rusedski | 4 | 0 | | | | | | | | | | | | | |
| | O Gross | 6 | 6 | | | O Gross | 6 | 6 | | | | | | | | |
| Q | M Martelli | 6 | 6$^{13}$ | 5 | Q | J Imaz-Ruiz | 1 | 0 | | | | | | | | |
| Q | J Imaz-Ruiz | 4 | 7$^{15}$ | 7 | | | | | | O Gross | 3 | 3 | | | | |
| | T Haas | 3 | 7$^7$ | 4 | | | | | 7 | T Enqvist | 6 | 6 | | | | |
| | M Rosset | 6 | 6$^2$ | 6 | | M Rosset | 2 | 3 | | | | | | | | |
| | M Norman | 5 | 3 | | 7 | T Enqvist | 6 | 6 | | | | | | | | |
| 7 | T Enqvist | 7 | 6 | | | | | | | | | | 7 | T Enqvist | 6 | 6 |
| 3 | G Kuerten | 6 | 7$^8$ | | | | | | | | | | | M Gustafsson | 3 | 4 |
| WC | G Ivanišević | 4 | 6$^6$ | | 3 | G Kuerten | 6$^2$ | 3 | | | | | | | | |
| Q | S Grosjean | 3 | 1 | | | M Gustafsson | 7$^7$ | 6 | | | | | | | | |
| | M Gustafsson | 6 | 6 | | | | | | | M Gustafsson | 6 | 6 | | | | |
| | N Escudé | 4 | 6 | 6 | | | | | | N Escudé | 3 | 1 | | | | |
| | D Hrbatý | 6 | 3 | 1 | | N Escudé | 6 | 7$^7$ | | | | | | | | |
| | J Alonso | 5 | 4 | | 5 | M Philippoussis | 4 | 6$^4$ | | | | | | | | |
| 5 | M Philippoussis | 7 | 6 | | | | | | | | | | | | | |

### Bottom 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 |
| WC/6 | S Bruguera | 1 | 6$^3$ | | | | | | | | | | | | | | | |
| | G Blanco | 6 | 7$^7$ | | | G Blanco | 6 | 6 | | | | | | | | | | |
| | A Rădulescu | 6$^5$ | 4 | | LL | G Mandl | 4 | 2 | | | | | | | | | | |
| LL | G Mandl | 7$^7$ | 6 | | | | | | | | G Blanco | 7 | 5 | 7$^7$ | | | | |
| | T Nydahl | 7 | 2 | 6 | | | | | | | T Nydahl | 5 | 7 | 6$^1$ | | | | |
| LL | C Vinck | 5 | 6 | 3 | | T Nydahl | 6 | 6 | | | | | | | | | | |
| WC | J Knippschild | 4 | 6 | 1 | 4 | T Henman | 3 | 1 | | | | | | | | | | |
| 4 | T Henman | 6 | 4 | 6 | | | | | | | | | | | | G Blanco | 4 | 4 |
| 8 | A Agassi | 6 | 3 | 6 | | | | | | | | | | | 8 | A Agassi | 6 | 6 |
| | T Woodbridge | 1 | 6 | 3 | 8 | A Agassi | 6 | 6 | | | | | | | | | | |
| | M Woodforde | 4 | 6$^2$ | | | R Schüttler | 1 | 4 | | | | | | | | | | |
| | R Schüttler | 6 | 7$^7$ | | | | | | | 8 | A Agassi | 6 | 6 | | | | | |
| Q | C van Garsse | 7 | 6 | | | | | | | 2 | J Björkman | 2 | 2 | | | | | |
| | B Steven | 5 | 1 | | Q | C van Garsse | 4 | 0 | r | | | | | | | | | |
| | A Medvedev | 6 | 4 | 0 | 2 | J Björkman | 6 | 2 | | | | | | | | | | |
| 2 | J Björkman | 2 | 6 | 6 | | | | | | | | | | | | | | |