Tongue, C J
Current rating: 1557
Record: 9-7
| Grand Prix London 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 283 | Fisher, Chris (1500) | Won 2-0 | +181518 |
| 2sealed | 316 | Miranda, Jorge (1543) | Won 2-0 | +181536 |
| 3sealed | 229 | Pichon, Elie (1837) | Lost 1-2 | -121524 |
| 4sealed | 533 | Figueiredo, Luis (1505) | Won 2-1 | +171541 |
| 5sealed | 252 | Czechumski, Piotr (1470) | Won 2-0 | +171558 |
| 6sealed | 152 | Tajak, Lukas (1758) | Won 2-0 | +221580 |
| 7sealed | 148 | Naslund, Jonas (1577) | Won 2-1 | +181598 |
| 8sealed | 88 | Fyssas, Antonis (1788) | Won 2-0 | +211619 |
| 9sealed | 58 | Jensen, Marten (1671) | Lost 0-2 | -171602 |
| 10sealed | 11 | Deibler, Christian (1612) | Lost 1-2 | -181584 |
| 11draft | 96 | Martin, Sam [ENG] (1549) | Won 2-0 | +181602 |
| 12draft | 67 | Gulyas, Gergely (1698) | Won 2-1 | +191621 |
| 13draft | 10 | Brambilla, Davide (1808) | Lost 0-2 | -141607 |
| 14draft | 17 | Bjornerud, Sveinung (1891) | Lost 0-2 | -131594 |
| 15draft | 11 | Verhoeven, Joep (1557) | Lost 0-2 | -191575 |
| 16draft | 91 | Lepore, Pietro (1558) | Lost 1-2 | -181557 |
| average opponent: 1645record: 9-7 | new rating: 1557 | |||