WTA and ATP rankings on - 28.12.1998
- Searching
- Ranking - singles
- Ranking - doubles
- Race - singles
| Rank | Move | Player name | Country | Points |
| 3. | - |
Hingis Martina | Switzerland | 2816 |
| 58. | - |
Schnyder Patty | Switzerland | 623 |
| 132. | - |
Gagliardi Emmanuelle | Switzerland | 203 |
| 245. | - |
Tricerri Alienor | Switzerland | 76 |
| 355. | - |
Vavrinec Miroslava | Switzerland | 36 |
| 415. | - |
Losey Marylene | Switzerland | 25 |
| 588. | - |
Asensio Diana | Switzerland | 11 |
| 634. | - |
Corazza Sabrina | Switzerland | 9 |
|1-50|
- Betting ranking
| Branstine Carson | +1222 |
| Bagnis Facundo | +975 |
| Vacherot Valentin | +946 |
| Bouzas Maneiro Jessica | +899 |
| Trungelliti Marco | +882 |
| Krutykh Oleksii | -1062 |
| Bonzi Benjamin | -913 |
| Kolodynska Jana | -822 |
| Guillen Meza Alvaro | -819 |
| Added Dan | -817 |
This week's tournaments
| Main tournaments | ||||
| Madrid | 2 | |||
| Madrid WTA | 2 | |||
| Lower level tournaments | ||||
| Aix en Provence challenger | 4 | |||
| Cagliari challenger | 4 | |||
| Guangzhou challenger | 5 | |||
| Porto Alegre challenger | 3 | |||
| UTR Pro Tennis Series 3 | 3 | |||
| UTR Pro Tennis Series 5 | 2 | |||
| Bonita Springs ITF | 3 | |||
| Gifu ITF | 4 | |||
| Lleida | 3 | |||
| Saint-Malo WTA | 3 | |||
| Wiesbaden ITF | 3 | |||
| Lopota 2 ITF | 1 | |||
| Anapoima ITF | 3 | |||
| Boca Raton 3 ITF | 3 | |||
| Hammamet 7 ITF | 3 | |||
| Nottingham 7 ITF | 3 | |||
| Santa Margherita Di Pula 6 ITF | 5 | |||
| UTR Pro Tennis Series 5 | 4 | |||
| Yecla ITF | 3 | |||
| Antalya 17 ITF | 3 | |||
| Kursumlijska Banja 3 ITF | 4 | |||
| Monastir 34 ITF | 3 | |||
| Osijek ITF | 3 | |||
| Varberg ITF | 3 | |||
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