Chapman, William
Current rating: 1530
| Grand Prix Memphis 2018 (RIX standard) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 277 | Kirklen, Marcus (1500) | Won 2-0 | +171539 |
| 2standard | 192 | Robinson, Randall (1500) | Won 2-0 | +171556 |
| 3standard | 132 | Rea, Brandon (1519) | Won 2-0 | +181574 |
| 4standard | 103 | Hanus, Brandon (1554) | Won 2-1 | +171591 |
| 5standard | 55 | Ingram, Peter (1895) | Lost 1-2 | -121579 |
| 6standard | 73 | Stamps, Matt (1526) | Lost 1-2 | -191560 |
| 7standard | 113 | Soorani, Shaheen (1975) | Lost 1-2 | -111549 |
| 8standard | 198 | Thompson, Vince (1516) | Lost 0-2 | -191530 |
| top | average opponent: 1623record: 4-4 | new rating: 1530 | ||
| Grand Prix Memphis 2015 (FRF standard) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 235 | Biyleu, Phil (1500) | Lost 0-2 | -171444 |
| 2standard | 368 | Morgan, Michael (1434) | Won 2-0 | +181462 |
| 3standard | 405 | Courtright, Kevin (1545) | Won 2-0 | +191481 |
| 4standard | 224 | Stewart, Robert (1521) | Won 2-0 | +191500 |
| 5standard | 115 | Bessette, Alexa (1501) | Won 2-1 | +181518 |
| 6standard | 93 | Thornton, Dustin (1513) | Won 2-0 | +181536 |
| 7standard | 203 | Edwards, Cliff (1572) | Won 2-1 | +181554 |
| 8standard | 19 | Macaraeg, Tad (1705) | Lost 1-2 | -151539 |
| 9standard | 80 | Blommel, Christopher (1562) | Lost 1-2 | -171522 |
| top | average opponent: 1539record: 6-3 | new rating: 1522 | ||
| Grand Prix Cincinnati 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 486 | Stokes, John (1481) | Lost 0-2 | -181482 |
| 2standard | 691 | Wright, Thomas (1351) | Won 2-0 | +151497 |
| 3standard | 565 | Hale, Nathaniel (1501) | Lost 0-2 | -181479 |
| 4standard | 724 | Payne, Craig (1463) | Lost 1-2 | -181461 |
| top | average opponent: 1449record: 1-3 | new rating: 1461 | ||