WTA and ATP rankings on - 27.12.2021
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- Ranking - singles
- Ranking - doubles
- Race - singles
| Rank | Move | Player name | Country | Points |
| 4. | - |
Tsitsipas Stefanos | Greece | 6540 |
| 399. | 1 |
Pervolarakis Michail | Greece | 106 |
| 771. | 7 |
Tsitsipas Petros | Greece | 27 |
| 855. | 4 |
Kalovelonis Markos | Greece | 19 |
| 1076. | 2 |
Thanos Aristotelis | Greece | 10 |
| 1199. | - |
Skorilas Alexandros | Greece | 7 |
| 1373. | 3 |
Sakellaridis Stefanos | Greece | 4 |
| 1571. | 2 |
Azoides Demetris | Greece | 2 |
| 2062. | 10 |
Stergiou Ioannis | Greece | 1 |
| 2118. | 10 |
Kapiris Stamatis | Greece | 1 |
| 2118. | 10 |
Keisidis Christos | Greece | 1 |
| 2118. | 10 |
Stamoulos Ioannis | Greece | 1 |
| 2153. | 8 |
Xilas Ioannis | Greece | 1 |
| 2206. | 9 |
Sakellaridis Michalis | Greece | 1 |
|1-50|
- Betting ranking
| Rezai Aravane | +1590 |
| Laboutkova Aneta | +1374 |
| Gomez Federico Agustin | +1364 |
| Machac Tomas | +1345 |
| Blokhina Alexis | +1313 |
| Krutykh Oleksii | -1559 |
| Fruhvirtova Linda | -1447 |
| Lanca Sara | -1445 |
| Dancu Vlad Andrei | -1440 |
| Ilkel Cem | -1433 |
This week's tournaments
| Lower level tournaments | ||||
| Temuco challenger | 25 | |||
| Maia challenger | 24 | |||
| Yokkaichi challenger | 20 | |||
| Manzanillo challenger | 24 | |||
| UTR Pro Tennis Series 3 | 2 | |||
| UTR Pro Tennis Series 6 | 4 | |||
| Buenos Aires WTA | 16 | |||
| Carrara ITF | 24 | |||
| Trnava 8 ITF | 13 | |||
| Selva Gardena ITF | 18 | |||
| Yokohama ITF | 26 | |||
| Lousada 2 ITF | 6 | |||
| Santo Domingo 10 ITF | 21 | |||
| Antalya 35 ITF | 11 | |||
| Monastir 12 ITF | 26 | |||
| Ribeirao Preto ITF | 18 | |||
| Sharm El Sheikh 22 ITF | 16 | |||
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