Butler, Mark
Current rating: 1510
Record: 9-8
| Grand Prix Richmond 2018 (leg) (legacy) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 44 | Morris, Keith (1381) | Lost 1-2 | -211517 |
| 2legacy | 181 | Mason, Matthew (1463) | Won 2-1 | +171534 |
| 3legacy | 225 | King, Kenneth (1384) | Lost 1-2 | -211513 |
| 4legacy | 375 | Medykiewicz, Chris (1429) | Won 2-1 | +171530 |
| 5legacy | 250 | Andersen, Joseph (1433) | Lost 0-2 | -201510 |
| average opponent: 1418record: 2-3 | new rating: 1510 | |||
| Grand Prix Columbus 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 305 | Wilson, Joe (1401) | Lost 1-2 | -201480 |
| 2legacy | 519 | Peters, Ryan (1485) | Won 2-0 | +181498 |
| 3legacy | 708 | Miller, Sam (1597) | Won 2-1 | +201518 |
| 4legacy | 501 | Almaroad, Kent (1518) | Won 2-0 | +181536 |
| 5legacy | 202 | Mitchell, Zane (1788) | Lost 0-2 | -131523 |
| 6legacy | 412 | Wilkerson, Joseph (1412) | Lost 0-2 | -201503 |
| 7legacy | 425 | Brown, James (1365) | Won 2-0 | +151518 |
| 8legacy | 415 | O'Heran, Zachary (1528) | Won 2-0 | +181536 |
| 9legacy | 331 | Baxter, Harrison (1554) | Won 2-1 | +191555 |
| 10legacy | 259 | Preston, Colin (1559) | Won 2-1 | +181573 |
| 11legacy | 137 | Reed, Michael (1583) | Lost 1-2 | -181555 |
| 12legacy | 199 | Accetturo, Vince (1614) | Lost 0-2 | -171538 |
| average opponent: 1534record: 7-5 | new rating: 1538 | |||