Tumber, Mark
Current rating: 1472
Record: 12-16-2
| Grand Prix Liverpool 2017 (XLN limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 302 | Lepisto, Martti (1477) | Won 2-0 | +181507 |
| 2sealed | 106 | Peng, Zer Shiuan (1547) | Won 2-1 | +191526 |
| 3sealed | 10 | Collis, Robert (1500) | Lost 0-2 | -191507 |
| 4sealed | 274 | Hora, Paulo (1542) | Lost 1-2 | -171490 |
| 5sealed | 339 | Rohling, Markus (1452) | Won 2-1 | +171507 |
| 6sealed | 310 | Cunha, Nelson (1531) | Lost 0-2 | -171490 |
| 7sealed | 300 | Kim, Minjae (1501) | Lost 1-2 | -181472 |
| top | average opponent: 1507record: 3-4 | new rating: 1472 | ||
| Grand Prix Birmingham 2017 (modern) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 179 | Gardner, Daniel J [ENG] (1691) | Won 2-1 | +221456 |
| 2modern | 297 | Shepherd, Jack (1571) | Won 0-0 | +201476 |
| 3modern | 252 | Bergers, Selene Elizabeth (1534) | Won 2-0 | +191495 |
| 4modern | 6 | Fuchs, Daniel (1538) | Won 2-1 | +191514 |
| 5modern | 24 | Samuel, Tim (1555) | Lost 0-2 | -171497 |
| 6modern | 78 | Grinstead, Jamie (1494) | Lost 0-2 | -181479 |
| 7modern | 259 | Keey, James (1453) | Lost 1-2 | -191460 |
| 8modern | 346 | Tomlinson, Alexander (1523) | Won 2-1 | +201480 |
| 9modern | 229 | Niemeijer, Hugo (1536) | Won 2-0 | +191499 |
| 10modern | 249 | Palov, Velislav (1543) | Lost 1-2 | -181481 |
| 11modern | 214 | Stok, Alex (1842) | Won 2-0 | +251506 |
| 12modern | 147 | Huisman, Peter (1582) | Lost 0-2 | -171489 |
| top | average opponent: 1572record: 7-5 | new rating: 1489 | ||
| Grand Prix Manchester 2016 (SOI standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 280 | Deltour, Louis (2071) | Lost 1-2 | -81441 |
| 4standard | 398 | Verri, Alessandro (1576) | Won 2-0 | +201461 |
| 5standard | 135 | Madden, Stephen (1681) | Lost 0-2 | -141447 |
| 6standard | 457 | Knocinski, Przemek (1692) | Lost 1-2 | -131434 |
| top | average opponent: 1755record: 1-3 | new rating: 1434 | ||
| Grand Prix London 2015 (ORI standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 464 | Evans, Leon (1430) | Draw 1-1 | -11465 |
| 2standard | 828 | Bukovszki, Istvan (1500) | Draw 1-1 | +11466 |
| 3standard | 1005 | Applebaum, Adam (1526) | Lost 1-2 | -171449 |
| top | average opponent: 1485record: 0-1-2 | new rating: 1449 | ||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 427 | George, Steve (1500) | Lost 0-2 | -181482 |
| 2block | 495 | White, Peter (1589) | Lost 0-2 | -161466 |
| 3block | 617 | Glover, Jay (1464) | Lost 0-2 | -181448 |
| 4block | 657 | Marchall, Tammy (1446) | Won 2-0 | +181466 |
| top | average opponent: 1500record: 1-3 | new rating: 1466 | ||