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
| Luciano Lavinia | +1386 |
| Vrancken Peeters Anouck | +1222 |
| Kozyreva Maria | +825 |
| Keys Madison | +800 |
| Gabric Anna | +769 |
| Kis Balazs Rafael | -1125 |
| Yoshikawa Yusuke | -867 |
| Moser Nicolas (2002) | -837 |
| Heinzova Izabela | -822 |
| Vagner Josef | -700 |
This week's tournaments
| Main tournaments | ||||
| Miami | 47 | |||
| Miami | 44 | |||
| Lower level tournaments | ||||
| Asuncion challenger | 12 | |||
| Merida challenger | 10 | |||
| Murcia challenger | 6 | |||
| Zadar challenger | 5 | |||
| UTR Pro Tennis Series 3 | 40 | |||
| UTR Pro Tennis Series 5 | 11 | |||
| UTR Pro Tennis Series 6 | 13 | |||
| Antalya WTA | 4 | |||
| Luan ITF | 6 | |||
| Maribor ITF | 6 | |||
| Kofu ITF | 6 | |||
| Santo Domingo 5 ITF | 8 | |||
| Vacaria ITF | 11 | |||
| Sabadell ITF | 14 | |||
| Solarino 2 ITF | 6 | |||
| Swan Hill ITF | 6 | |||
| UTR Pro Tennis Series 5 | 15 | |||
| Alaminos-Larnaca 2 ITF | 7 | |||
| Antalya 11 ITF | 2 | |||
| Heraklion ITF | 5 | |||
| Le Havre ITF | 5 | |||
| Monastir 27 ITF | 6 | |||
| Nonthaburi 2 ITF | 6 | |||
| Sharm El Sheikh 8 ITF | 5 | |||
| UTR Pro Match Series | 39 | |||
| UTR Pro Tennis Series 8 | 7 | |||
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