| Player ID | 44601 |
| First Name | William |
| Last Name | Castaneda |
| Sex | M |
| User ID | 0 |
| DOB | **** |
| Player lists | Maidenhead |
| Club | Maidenhead (2624) |
| Local Rating | |
| Local Rapid Rating | |
| FIDE Code | |
| FIDE Federation | |
| ECF Rating Code (links to rating system) | 289267E |
| Membership Number (from rating list) | ME016253 |
| Membership Category | Bronze |
| ECF Rapid OTB January | 1680P |
| ECF Standard OTB January | 1741A |
| ECF Rapid OTB August | 1691K |
| ECF Standard OTB August | 1767K |
| ECF Rapid OTB Monthly | 1696K |
| ECF Rapid OTB September | 1696K |
| ECF Standard OTB Monthly | 1767K |
| ECF Standard OTB September | 1767K |
| ECF Standard OTB September Old | 1733A |
| ECF Rapid OTB Latest | 1696K |
| ECF Standard OTB Latest | 1767K |
