| Player ID | 50405 |
| First Name | Marek |
| Last Name | Jarzynski |
| Sex | M |
| User ID | 0 |
| DOB | **** |
| Player lists | None |
| Club | Crewe (7CRE) |
| Local Rating | 1000 |
| Local Rapid Rating | 1000 |
| FIDE Code | 0 |
| FIDE Federation | |
| ECF Rating Code (links to rating system) | 344208B |
| Membership Number (from rating list) | |
| Membership Category | None |
| ECF Standard OTB August | 1676P |
| ECF Rapid OTB August | 1849P |
| ECF Standard OTB September | 1676P |
| ECF Rapid OTB September | 1849P |
| ECF Rapid OTB January | 1849P |
| ECF Standard OTB January | 1676P |
| ECF Rapid OTB Monthly | 1849P |
| ECF Standard OTB Monthly | 1676P |
| ECF Rapid OTB Latest | 1849P |
| ECF Standard OTB Latest | 1676P |
