Williams, Dewayne
Current rating: 1476
| Grand Prix Birmingham 2018 (std) (DOM standard) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 239 | Spedding, Ethan (1500) | Lost 0-2 | -181493 |
| 2standard | 380 | Watson, Christopher [ENG] (1482) | Won 2-1 | +181511 |
| 3standard | 417 | Taylor, Nathan (1592) | Lost 1-2 | -171494 |
| 4standard | 415 | Womerlsey, George (1484) | Lost 1-2 | -181476 |
| top | average opponent: 1515record: 1-3 | new rating: 1476 | ||
| Grand Prix London 2018 (RIX limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 502 | Rose, Callum (1548) | Draw 1-1 | +11484 |
| 2sealed | 438 | Dubosarsky, Dover (1594) | Won 2-1 | +201504 |
| 3sealed | 473 | Elswood, Tom (1468) | Won 2-1 | +181522 |
| 4sealed | 272 | Ramboa, Thierry (1793) | Won 2-1 | +221544 |
| 5sealed | 136 | Hulten, Alexander (1720) | Lost 0-2 | -141530 |
| 6sealed | 296 | Nadezhdina, Natalia (1600) | Lost 1-2 | -171513 |
| 7sealed | 458 | Manktelow, Benjamin (1484) | Won 2-0 | +171530 |
| 8sealed | 321 | Bennacef, Ahmed (1459) | Lost 0-2 | -191511 |
| top | average opponent: 1583record: 4-3-1 | new rating: 1511 | ||
| Grand Prix London 2015 (ORI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 303 | Robertson, David G (1500) | Lost 0-2 | -181482 |
| 2standard | 396 | Gunner, Michael (1482) | Won 2-0 | +181500 |
| 3standard | 415 | Benczedi, Jozsef (1577) | Lost 1-2 | -171483 |
| 4standard | 399 | Sarton, Michael (1479) | Won 2-0 | +181501 |
| 5standard | 309 | McManis, Ellen (1487) | Draw 1-1 | 01501 |
| 6standard | 327 | O'Rourke, Daniel [ENG] (1496) | Lost 0-2 | -181483 |
| top | average opponent: 1504record: 2-3-1 | new rating: 1483 | ||