Dey, Jonathan
Current rating: 1514
Record: 7-7
| Grand Prix Birmingham 2018 (std) (DOM standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 250 | Abreu, Josue (1693) | Won 2-0 | +221503 |
| 2standard | 215 | Reay, Christopher (1626) | Won 2-0 | +201523 |
| 3standard | 128 | Jackson, Stuart (1569) | Won 2-0 | +191542 |
| 4standard | 7 | Dreimanis, Gints (1816) | Lost 0-2 | -131529 |
| 5standard | 131 | Harpin, Jonathan (1622) | Lost 0-2 | -161513 |
| 6standard | 329 | Arndt, Tilmann (1596) | Lost 1-2 | -171496 |
| 7standard | 297 | Naylor, Paul (1507) | Won 2-1 | +181514 |
| average opponent: 1633record: 4-3 | new rating: 1514 | |||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 348 | Crnkic, Hamza (1500) | Won 2-1 | +181518 |
| 2block | 53 | Adolfsson, Kristjan (1518) | Won 2-0 | +181536 |
| 3block | 247 | Hargreaves, Josef (1441) | Lost 0-2 | -201516 |
| 4block | 274 | Warrington, Sophie (1532) | Lost 0-2 | -171499 |
| 5block | 446 | Rushton, Matthew (1500) | Won 2-0 | +181517 |
| 6block | 263 | Bennett, Ian (1522) | Lost 0-2 | -181499 |
| 7block | 330 | Wienand, Jonas (1534) | Lost 0-2 | -181481 |
| average opponent: 1507record: 3-4 | new rating: 1481 | |||