Knowles, Jak
Current rating: 1395
| Grand Prix Birmingham 2019 (modern) | starting rating: 1379 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 6 | Potts, Dom (1500) | Lost 0-2 | -161363 |
| 2modern | 307 | Tindall, Freddie (1481) | Won 2-1 | +211384 |
| 3modern | 236 | Zacharias, Kyriakos (1705) | Won 2-1 | +231407 |
| 4modern | 209 | Andrews, Ben (1602) | Won 2-0 | +221429 |
| 5modern | 138 | de Jong, Bob (1408) | Lost 0-2 | -191410 |
| 6modern | 171 | Francini, Roberto (1538) | Lost 1-2 | -151395 |
| top | average opponent: 1539record: 3-3 | new rating: 1395 | ||
| Grand Prix Manchester 2016 (SOI standard) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 266 | Bovien, Mathias (1600) | Lost 1-2 | -151413 |
| 2standard | 537 | Doropoulos, Konstantinos (1427) | Lost 0-2 | -181395 |
| 3standard | 740 | Gonzalez, Juan (1501) | Lost 1-2 | -161379 |
| top | average opponent: 1509record: 0-3 | new rating: 1379 | ||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 491 | Sneezum, Patrick (1500) | Won 2-1 | +181518 |
| 2block | 234 | Green, Ken (1563) | Lost 0-2 | -171501 |
| 3block | 500 | Newell, Blake (1500) | Lost 1-2 | -181483 |
| 4block | 512 | Antill, Brett (1429) | Lost 0-2 | -191464 |
| 5block | 544 | Mohammed, Samiuddin (1464) | Lost 0-2 | -181446 |
| 6block | 511 | Woodfield, Annie (1449) | Lost 0-2 | -181428 |
| top | average opponent: 1484record: 1-5 | new rating: 1428 | ||