O'Malley, William
Current rating: 1504
Record: 5-5-1
| Grand Prix Madison 2019 (WAR limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 67 | Pyle, Ryan (1500) | Lost 0-2 | -181481 |
| 2sealed | 294 | Pawlowski, Bryan (1482) | Won 2-0 | +181499 |
| 3sealed | 330 | Gold, Stav (1467) | Won 2-1 | +181517 |
| 4sealed | 197 | Szylman, Dariusz (1836) | Lost 0-2 | -131504 |
| average opponent: 1571record: 2-2 | new rating: 1504 | |||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 39 | Weeke, John (1619) | Won 2-0 | +201520 |
| 2sealed | 218 | Truong, Daniel (1530) | Lost 1-2 | -181502 |
| 3sealed | 634 | Stoltzfus, Timothy (1417) | Won 2-0 | +171519 |
| 4sealed | 434 | Rueckl, Joseph (1508) | Won 2-0 | +181537 |
| 5sealed | 2140 | Mowles, Jeremy (1427) | Lost 0-2 | -201517 |
| 6sealed | 650 | Christian, Tyler (1524) | Draw 1-1 | 01517 |
| 7sealed | 493 | Craft, Christian (1535) | Lost 1-2 | -181499 |
| average opponent: 1509record: 3-3-1 | new rating: 1499 | |||