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
| Adkar Vaishnavi | +1230 |
| Baez Sebastian | +1030 |
| Mair Laura | +899 |
| Jurna Elizabeth | +829 |
| Melnic Vladislav | +826 |
| Nakanishi Seiya | -756 |
| Mochizuki Shintaro | -605 |
| Bakker Sam | -600 |
| Lazarevic Andjela | -600 |
| Krall Liam | -576 |
This week's tournaments
| Main tournaments | ||||
| Indian Wells | 19 | |||
| Cap Cana challenger | 14 | |||
| Phoenix challenger | 14 | |||
| Indian Wells | 14 | |||
| Lower level tournaments | ||||
| Kigali 2 challenger | 21 | |||
| Santiago challenger | 19 | |||
| Cherbourg challenger | 20 | |||
| Fujairah challenger | 0 | |||
| Hersonissos 2 challenger | 21 | |||
| UTR Pro Tennis Series 3 | 41 | |||
| UTR Pro Tennis Series 5 | 15 | |||
| UTR Pro Tennis Series 9 | 14 | |||
| Antalya 3 WTA | 24 | |||
| Austin 2 WTA | 14 | |||
| Kyoto 2 ITF | 23 | |||
| Heraklion 2 ITF | 23 | |||
| Huamantla 2 ITF | 0 | |||
| Monastir 26 ITF | 25 | |||
| Timaru ITF | 24 | |||
| UTR Pro Tennis Series 5 | 18 | |||
| UTR Pro Tennis Series 9 | 18 | |||
| Antalya 8 ITF | 0 | |||
| Gonesse ITF | 25 | |||
| Maanshan 2 ITF | 24 | |||
| Sharm El Sheikh 7 ITF | 16 | |||
| Victoriaville ITF | 20 | |||
| UTR Pro Match Series | 25 | |||
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