Lewis, Jack
Current rating: 1419
Record: 5-10
| Grand Prix Copenhagen 2017 (modern) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 562 | Kirkegaard, Jeppe (1500) | Lost 0-2 | -171413 |
| 2modern | 452 | Karjala-Svendsen, Joshua (1466) | Lost 0-2 | -171396 |
| 3modern | 865 | Haan, Imko (1463) | Lost 0-2 | -171379 |
| 4modern | 869 | Nemeth, Viktoria (1446) | Won 2-0 | +201399 |
| 5modern | 795 | Abelt, Marc (1314) | Won 2-0 | +161415 |
| 6modern | 576 | Vilaca, Pedro (1496) | Lost 0-2 | -161399 |
| 7modern | 684 | Wetterborg, Kristofer (1465) | Won 2-0 | +191418 |
| 8modern | 569 | Rathjen, Tim-Eric (1435) | Won 2-1 | +181436 |
| 9modern | 447 | Fassler, Dario (1509) | Lost 0-2 | -171419 |
| average opponent: 1455record: 4-5 | new rating: 1419 | |||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 149 | Ball, Andrew (1506) | Lost 1-2 | -181482 |
| 2modern | 376 | Gafken, Charles (1484) | Lost 0-2 | -181464 |
| 4modern | 461 | Passaro, Nick (1503) | Won 2-1 | +191483 |
| 5modern | 399 | Manuel, Melvin (1577) | Lost 0-2 | -161467 |
| 6modern | 420 | Zubrycki, Hiram (1485) | Lost 1-2 | -181449 |
| 7modern | 329 | Varin, Sonia (1399) | Lost 0-2 | -191430 |
| average opponent: 1492record: 1-5 | new rating: 1430 | |||