| Player ID | 12448 |
| First Name | Jonathan |
| Last Name | Mahony |
| Sex | M |
| User ID | 0 |
| Club (used in grading individual event) | Rose Forgrove |
| DOB | **** |
| Player lists | Rose Forgrove,Leeds,All LCA |
| Local Rating | 0 |
| Local Rapid Rating | 0 |
| FIDE Code | 447781 |
| FIDE Federation | |
| ECF Grading Code | 276212C |
| Membership Number (entered manually) | |
| Membership Number (from grading list) | ME008041 |
| ECF Standard OTB January | 1611F |
| ECF Rapid OTB January | 0* |
| ECF Standard OTB September | 0 |
| ECF Rapid OTB September | 0 |
| ECF Standard OTB August | 1642K |
| ECF Standard OTB Latest | 1642K |
| FIDE Standard | 0 |
| FIDE Rapid | 0 |
| FIDE Blitz | 0 |
