| WON | LOST | |
| Clay | 1 | |
| Grass | 1 | 2 |
| Hard | 12 | 10 |
| WON | LOST | |
| Finals | 1 | |
| Semifinals | 1 | |
| Quarterfinals | 1 | 1 |
| Q8 | 2 | 2 |
| Q16 | 4 | 1 |
| Q32 | 1 | 3 |
| Q64 | 2 |
| WON | LOST | |
| Adelaide, Australia | 5 | |
| Sydney Outdoor, Australia | 1 | 1 |
| Australian Open, Australia | 1 | |
| Indian Wells, United States | 1 | |
| Key Biscayne, United States | 1 | |
| London / Queen's Club, England | 1 | |
| Newport, United States | 1 | 1 |
| Washington, United States | 1 | |
| New Haven, United States | 1 | 1 |
| Singapore, Singapore | 2 | 1 |
| WON | LOST | |
| Andre Agassi | 1 | |
| Daniel Vacek | 1 | |
| Hendrik Dreekmann | 1 | |
| Jason Stoltenberg | 1 | 1 |
| Jonas Bjorkman | 1 | |
| Justin Gimelstob | 1 | 1 |
| Lionel Roux | 1 | |
| Lorenzo Manta | 1 | |
| Marcelo Rios | 1 | |
| Mark Woodforde | 1 | |
| Michael Tebbutt | 1 | |
| Nicolas Escude | 1 | |
| Pete Sampras | 1 | |
| Sargis Sargsian | 1 | |
| Scott Draper | 1 | |
| Sebastien Lareau | 1 | |
| Vincent Spadea | 1 |
Lleyton Hewitt tennis results in year 1998 tennis statistics
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