Marriott, George
Current rating: 1429
Record: 12-18
| Grand Prix Birmingham 2017 (modern) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 164 | Horlock, Rhys (1497) | Lost 1-2 | -171438 |
| 2modern | 572 | Ward, Kurt (1482) | Lost 0-0 | -171421 |
| 3modern | 727 | Bates, Pete (1463) | Won 2-1 | +181439 |
| 4modern | 609 | Brana, Michael (1482) | Lost 0-2 | -171422 |
| 5modern | 733 | Serrao, Pedro (1640) | Won 2-0 | +221444 |
| 6modern | 664 | Kolp, Johann (1587) | Lost 0-2 | -151429 |
| top | average opponent: 1525record: 2-4 | new rating: 1429 | ||
| Grand Prix Manchester 2016 (SOI standard) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 341 | Harre, Martin (1550) | Won 2-0 | +191522 |
| 4standard | 160 | Fishwick, Shaun (1521) | Lost 0-2 | -181504 |
| 5standard | 212 | Andersson, Toby (1622) | Lost 1-2 | -161488 |
| 6standard | 486 | Jenkins, Thomas (1518) | Lost 0-2 | -171471 |
| 7standard | 511 | Warden, Graeme (1596) | Lost 1-2 | -161455 |
| top | average opponent: 1562record: 1-4 | new rating: 1455 | ||
| Grand Prix London 2015 (ORI standard) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 195 | [anonymous] | Won 2-1 | +181509 |
| 4standard | 88 | Skinstad, Erik (1533) | Won 2-1 | +191528 |
| 5standard | 50 | Rushent, Josh (1572) | Lost 1-2 | -171511 |
| 6standard | 65 | Brandt, Kenneth (1915) | Lost 0-2 | -111500 |
| 7standard | 102 | Lopez, Oliver (1585) | Won 2-0 | +191519 |
| 8standard | 92 | Schuringa, Sebastiaan (1625) | Lost 0-2 | -161503 |
| top | average opponent: 1622record: 3-3 | new rating: 1503 | ||
| Grand Prix Liverpool 2015 (FRF limited) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 18 | Davies, Russ (1576) | Lost 0-2 | -171510 |
| 3sealed | 683 | de Freitas Perinazzo, Guilherme (1501) | Lost 1-2 | -181492 |
| 4sealed | 626 | O'Leary, John (1484) | Won 2-0 | +181510 |
| 5sealed | 570 | MacKenzie-Skea, Christopher (1486) | Lost 0-2 | -191491 |
| top | average opponent: 1512record: 1-3 | new rating: 1491 | ||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 42 | Pike, Michael (1500) | Won 2-1 | +181518 |
| 2block | 166 | Di Loreto, Massimilian (1518) | Won 2-0 | +181536 |
| 3block | 327 | Picciafuochi, Riccardo (1581) | Won 2-0 | +191555 |
| 4block | 328 | Malin, Antti (1724) | Lost 1-2 | -151540 |
| 5block | 244 | Escribano, Fernando (1666) | Won 2-0 | +201560 |
| 6block | 271 | Tajak, Lukas (1759) | Lost 0-2 | -141546 |
| 7block | 126 | Saulacher, Sebastian (1557) | Lost 1-2 | -181528 |
| 8block | 258 | Doherty, Declan (1431) | Won 2-1 | +161544 |
| 9block | 184 | Berry, Andrew (1596) | Lost 0-2 | -171527 |
| top | average opponent: 1592record: 5-4 | new rating: 1527 | ||