Williamson, Alistair
Current rating: 1578
Record: 17-14
| Grand Prix Birmingham 2019 (modern) | starting rating: 1567 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 201 | Shelby-Lee, Ryan (1500) | Won 2-0 | +171584 |
| 2modern | 205 | Carnell, Alexander (1530) | Lost 1-2 | -191565 |
| 3modern | 233 | Spence, Paul (1448) | Won 2-1 | +161581 |
| 4modern | 194 | Padget, Ashley (1481) | Won 2-0 | +161597 |
| 5modern | 154 | Cuffe, John (1493) | Won 2-0 | +161613 |
| 6modern | 62 | Law, Tom (1841) | Lost 1-2 | -141599 |
| 7modern | 137 | de Jong, Bob (1414) | Lost 0-2 | -211578 |
| top | average opponent: 1529record: 4-3 | new rating: 1578 | ||
| Grand Prix Birmingham 2017 (modern) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 33 | Bowman, Peter (1735) | Won 2-1 | +221523 |
| 2modern | 244 | Sayers, Michael (1714) | Won 0-0 | +211544 |
| 3modern | 34 | Dickson, Andrew (1489) | Won 2-1 | +171561 |
| 4modern | 22 | Biesmans, Wouter (1749) | Won 2-1 | +221583 |
| 5modern | 50 | Depraz, Jean-Emmanuel (1880) | Won 2-0 | +231606 |
| 6modern | 27 | Burchett, Autumn (1835) | Lost 1-2 | -141592 |
| 7modern | 105 | Larsen, Christoffer (2216) | Lost 0-2 | -81584 |
| 8modern | 210 | Horre, Bart (1604) | Lost 1-2 | -171567 |
| 9modern | 249 | Feng, Da (1695) | Won 2-1 | +201587 |
| 10modern | 192 | Morrissey, Liam (1579) | Lost 1-2 | -181569 |
| 11modern | 246 | Huynh, Daniel (1511) | Won 2-0 | +171586 |
| 12modern | 176 | Seager, Lewis (1558) | Lost 0-2 | -191567 |
| top | average opponent: 1714record: 7-5 | new rating: 1567 | ||
| Grand Prix London 2016 (KLD limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 338 | Criddle, Dave (1500) | Lost 0-2 | -171465 |
| 2sealed | 635 | Fiskum, Vegard (1490) | Lost 1-2 | -181447 |
| 3sealed | 1076 | Majorczyk, Frederic (1421) | Won 2-0 | +181465 |
| 4sealed | 959 | Galton-Fenzi, David (1482) | Won 2-0 | +181483 |
| 5sealed | 906 | Kuhnert, Paul-Phillipp (1492) | Won 2-1 | +181501 |
| 6sealed | 386 | Bose, Timur (1340) | Lost 0-2 | -211480 |
| 7sealed | 708 | Purvis, Marc (1499) | Won 2-0 | +191499 |
| 8sealed | 586 | Leuvennink, Bernard (1516) | Won 2-0 | +181517 |
| 9sealed | 260 | Ridley, Adam (1623) | Lost 1-2 | -161501 |
| top | average opponent: 1485record: 5-4 | new rating: 1501 | ||
| Grand Prix Manchester 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 159 | Roblou, Rob (1463) | Won 2-0 | +171517 |
| 2standard | 184 | Griffiths, Sam (1541) | Lost 0-2 | -171500 |
| 3standard | 532 | Weber, Robert (1528) | Lost 1-2 | -181482 |
| top | average opponent: 1511record: 1-2 | new rating: 1482 | ||