| Player ID | 50341 |
| First Name | Jacob |
| Last Name | O'Brien |
| Sex | U |
| User ID | 0 |
| DOB | **** |
| Player lists | Rotherham |
| Club | Rotherham (8YSR) |
| Local Rating | 0 |
| Local Rapid Rating | 0 |
| FIDE Code | 343425194 |
| FIDE Federation | ENG |
| ECF Rating Code (links to rating system) | 346660H |
| Membership Number (from rating list) | ME035722 |
| Membership Category | Gold |
| ECF Rapid OTB January | 1780K |
| ECF Rapid OTB September | 1790P |
| ECF Standard OTB January | 1828K |
| ECF Standard OTB September | 1805K |
| ECF Standard OTB September Old | 1703P |
| ECF Rapid OTB August | 1760K |
| ECF Rapid OTB Monthly | 1760K |
| ECF Standard OTB August | 1813K |
| ECF Standard OTB Monthly | 1813K |
| ECF Rapid OTB Latest | 1760K |
| ECF Standard OTB Latest | 1825K |
| FIDE Standard | 0 |
| FIDE Rapid | 1788 |
| FIDE Blitz | 0 |
