Rankings, career records and tournament history for the ATP field, plus the head to head between any two of them.
| Rank | Player | Country |
|---|---|---|
| 7 | Flavio Cobolli | Italy |
| 20 | Francisco Cerundolo | Argentina |
| 50 | Raphael Collignon | Belgium |
| 55 | Juan Manuel Cerundolo | Argentina |
| 65 | Pablo Carreno Busta | Spain |
| 80 | Marin Cilic | Croatia |
| 91 | Jan Choinski | Great Britain |
| 125 | Francisco Comesana | Argentina |
| 147 | Federico Cina | Italy |
| 157 | Arthur Cazaux | France |
| 163 | Marco Cecchinato | Italy |
| 190 | Roberto Carballes Baena | Spain |
| 194 | Gianluca Cadenasso | Italy |
| 232 | Kimmer Coppejans | Belgium |
| 322 | Federico Coria | Argentina |
| 456 | Jie Cui | China |
| 667 | Duncan Chan | Canada |
| 9999 | Murphy Cassone | United States |
