# 1999 Investor Swedish Open – Singles

The defending champion was Magnus Gustafsson, but he lost in the second round to Martín Rodríguez. The unseeded Juan Antonio Marín from Costa Rica won the singles title.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Dominik Hrbatý (first round)
* Thomas Johansson (second round)
* Magnus Gustafsson (second round)
* Fernando Vicente (first round)
* Christian Ruud (semifinals)
* Magnus Norman (quarterfinals)
* Gastón Gaudio (first round)
* Ján Krošlák (first 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
| 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 |
| 1 | D Hrbatý | 1 | 2 | | | | | | | | | | | | | | | | | | | | |
| | J Tarango | 6 | 6 | | 1 | J Tarango | 2 | 5 | | | | | | | | | | | | | | | |
| Q | N Timfjord | 1 | 6$^1$ | | | G Blanco | 6 | 7 | | | | | | | | | | | | | | | |
| | G Blanco | 6 | 7$^7$ | | | | | | | | G Blanco | 1 | r | | | | | | | | | | |
| WC | A Vinciguerra | 7 | 6 | | | | | | | WC | A Vinciguerra | 6 | | | | | | | | | | | |
| | R Fromberg | 5 | 4 | | WC | A Vinciguerra | 7$^9$ | 6 | | | | | | | | | | | | | | | |
| Q | M Hipfl | 6 | 6 | | Q | M Hipfl | 6$^7$ | 1 | | | | | | | | | | | | | | | |
| 7 | G Gaudio | 3 | 1 | | | | | | | | | | | | WC | A Vinciguerra | 6 | 6 | | | | | |
| 3 | M Gustafsson | 6 | 6 | | | | | | | | | | | | 5 | C Ruud | 3 | 3 | | | | | |
| | V Santopadre | 2 | 4 | | 3 | M Gustafsson | 6$^5$ | 6 | 1 | | | | | | | | | | | | | | |
| | M Rodríguez | 1 | 6 | 7 | | M Rodríguez | 7$^7$ | 4 | 6 | | | | | | | | | | | | | | |
| | B Karbacher | 6 | 3 | 5 | | | | | | | M Rodríguez | 6$^3$ | 2 | | | | | | | | | | |
| | H Gumy | 6 | 6 | | | | | | | 5 | C Ruud | 7$^7$ | 6 | | | | | | | | | | |
| | D Sanguinetti | 2 | 1 | | | H Gumy | 2 | 2 | | | | | | | | | | | | | | | |
| Q | J Örtegren | 3 | 2 | | 5 | C Ruud | 6 | 6 | | | | | | | | | | | | | | | |
| 5 | C Ruud | 6 | 6 | | | | | | | | | | | | | | | | | WC | A Vinciguerra | 4 | 6$^4$ |
| 6 | M Norman | 6 | 6 | | | | | | | | | | | | | | | | | | JA Marín | 6 | 7$^7$ |
| WC | M Tillström | 2 | 0 | | 6 | M Norman | 6 | 6 | | | | | | | | | | | | | | | |
| Q | E Nicolás | 6 | 6 | | Q | E Nicolás | 3 | 3 | | | | | | | | | | | | | | | |
| | H Dreekmann | 2 | 3 | | | | | | | 6 | M Norman | 2 | 6 | 6$^4$ | | | | | | | | | |
| | D Pescariu | 3 | 0 | | | | | | | | JA Marín | 6 | 1 | 7$^7$ | | | | | | | | | |
| | JA Marín | 6 | 6 | | | JA Marín | 6 | 4 | 7 | | | | | | | | | | | | | | |
| | S Doseděl | 5 | 7 | 6 | | S Doseděl | 3 | 6 | 5 | | | | | | | | | | | | | | |
| 4 | F Vicente | 7 | 5 | 2 | | | | | | | | | | | | JA Marín | 2 | 7$^9$ | 6 | | | | |
| 8 | J Krošlák | 6 | 1 | 3 | | | | | | | | | | | WC | N Kulti | 6 | 6$^7$ | 4 | | | | |
| | G Puentes | 4 | 6 | 6 | | G Puentes | 3 | 6 | 6 | | | | | | | | | | | | | | |
| | J Alonso | 3 | 7 | 6 | | J Alonso | 6 | 4 | 4 | | | | | | | | | | | | | | |
| | J Díaz | 6 | 5 | 4 | | | | | | | G Puentes | 6 | 5 | 4 | | | | | | | | | |
| | M Kohlmann | 6 | 4 | 3 | | | | | | WC | N Kulti | 2 | 7 | 6 | | | | | | | | | |
| WC | N Kulti | 1 | 6 | 6 | WC | N Kulti | 6 | 7 | | | | | | | | | | | | | | | |
| | A Berasategui | 3 | 6 | 4 | 2 | T Johansson | 3 | 5 | | | | | | | | | | | | | | | |
| 2 | T Johansson | 6 | 1 | 6 | | | | | | | | | | | | | | | | | | | |