Player: John Costello - details
| Setting | Value |
|---|---|
| First Name | John |
| Last Name | Costello |
| Date of Birth | **** |
| Rating Code | 230075J |
| Sex | M |
| Club | Not Set |
| Local Rating | 0 |
| Local Rapid Rating | 0 |
| FIDE Code | 451819 |
| FIDE Federation | IOM |
| Lichess ID | **** |
| Chess.com ID | **** |
| Lists player is in | Isle of Man, 2024/25 Douglas Championship, 2024/25 Douglas Rapid, 2024/25 Graded friendlies, 2024/25 Manx Championship, 2024/25 Manx Cup, 2024/25 Manx Bowl, |
| Rating: ECF Standard OTB September | 1829K |
| Rating: ECF Rapid OTB September | 1756K |
| Rating: ECF Standard OTB August | 1829K |
| Rating: ECF Rapid OTB August | 1756K |
| Rating: ECF Standard OTB January | 1833K |
| Rating: ECF Rapid OTB January | 1766K |
| Rating: ECF Standard OTB Latest | 1823K |
| Rating: ECF Rapid OTB Latest | 1756K |
| Rating: ECF Standard OTB Monthly | 1823K |
| Rating: ECF Rapid OTB Monthly | 1756K |
| Rating: ECF Standard OTB Last September | 1796K |
| Rating: ECF Rapid OTB Last September | 1780K |