Cornish, Jonny D
Current rating: 1448
Record: 5-8
| Grand Prix London 2013 (GTC limited) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 141 | Calzetta, Alessio (1462) | Lost 0-2 | -181425 |
| 2sealed | 788 | Lamb, Ben (1484) | Lost 0-2 | -171408 |
| 3sealed | 1 | Mckittrick-Gallaher, Robert (1328) | Won 2-0 | +171425 |
| 4sealed | 724 | Przywecka, Anna (1459) | Won 2-0 | +181443 |
| 5sealed | 550 | Niznansky, Milan (1643) | Lost 1-2 | -141429 |
| 6sealed | 684 | Whyte, Ailsa (1480) | Won 2-0 | +191448 |
| average opponent: 1476record: 3-3 | new rating: 1448 | |||
| Grand Prix Ghent 2012 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 59 | Remis, Alexandre (1500) | Lost 0-2 | -181482 |
| 2legacy | 231 | Colella, Alexandre (1374) | Lost 1-2 | -201462 |
| 3legacy | 278 | Botilde, Antoine (1462) | Won 2-1 | +181480 |
| 4legacy | 292 | Kieger, Thomas (1515) | Lost 1-2 | -171463 |
| 5legacy | 292 | Verbiest, Matthijs (1364) | Lost 1-2 | -201443 |
| 6legacy | 275 | Beghyn, Johan D (1445) | Won 2-0 | +181461 |
| 7legacy | 225 | Zwick, Olivier (1460) | Lost 1-2 | -181443 |
| average opponent: 1446record: 2-5 | new rating: 1443 | |||