| Player ID | 18902 |
| First Name | Jonathan LB |
| Last Name | Blackburn |
| Sex | M |
| User ID | 0 |
| Club (used in grading individual event) | Holmes Chapel |
| DOB | **** |
| Local Rating | |
| Local Rapid Rating | |
| FIDE Code | 1801090 |
| FIDE Federation | |
| ECF Grading Code | 160594L |
| Membership Number (entered manually) | |
| Membership Number (from grading list) | ME008125 |
| ECF Standard Old | 214B |
| ECF Rapid Old | 210D |
| ECF Online Standard | 2245 |
| ECF Online Rapid | 2265 |
| ECF Online Blitz | 2269 |
| ECF Rapid Latest | 2275 |
| ECF Standard Latest | 2305 |
| ECF Rapid July | 2275 |
| ECF Standard July | 2305 |
| FIDE Standard | 2235 |
| FIDE Rapid | 2195 |
| FIDE Blitz | 2247 |
