Mansfield, John
Current rating: 1404
Record: 9-17
| Grand Prix Louisville 2017 (legacy) | starting rating: 1402 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 391 | Battle, Ray (1415) | Won 2-0 | +191421 |
| 2legacy | 400 | Butcher, Elliot (1520) | Lost 1-2 | -171404 |
| 3legacy | 677 | Dyke, Bethany (1415) | Won 2-1 | +191423 |
| 4legacy | 731 | Gardner, Joe (1556) | Won 2-1 | +201443 |
| 5legacy | 553 | Lo, William Y (1497) | Won 2-0 | +191462 |
| 6legacy | 495 | Ray, Wil (1564) | Lost 0-2 | -161446 |
| 7legacy | 548 | Lossett, Joe (2010) | Lost 0-2 | -91437 |
| 8legacy | 569 | Bledsoe, Doyle (1451) | Lost 1-2 | -181419 |
| 9legacy | 665 | Torrez, John (1574) | Lost 0-2 | -151404 |
| top | average opponent: 1556record: 4-5 | new rating: 1404 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1377 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 1426 | Carrick, Emily (1517) | Won 2-1 | +211398 |
| 3modern | 1355 | Suzuki, Rafael (1517) | Lost 1-2 | -161382 |
| 4modern | 1488 | Morgan, McKinley (1556) | Lost 1-2 | -151367 |
| 5modern | 1331 | Deese, Adam J (1500) | Won 2-0 | +211388 |
| 6modern | 1221 | Morrison, Christopher (1581) | Won 2-1 | +211409 |
| 7modern | 1031 | Armstrong, Glenn (1581) | Won 2-0 | +211430 |
| 8modern | 868 | Repta, Joel (1661) | Lost 0-2 | -141416 |
| 9modern | 800 | Sturm, Nate (1642) | Lost 0-2 | -141402 |
| top | average opponent: 1569record: 4-4 | new rating: 1402 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1392 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 121 | Veneri, Dario (1559) | Lost 0-2 | -151377 |
| top | record: 0-1 | new rating: 1377 | ||
| Grand Prix Memphis 2015 (FRF standard) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 267 | Owen, Andrew (1501) | Lost 0-2 | -171427 |
| 2standard | 397 | Ziggas, Andrew (1450) | Lost 0-2 | -181409 |
| 3standard | 450 | Ritchey, David (1467) | Lost 0-2 | -171392 |
| top | average opponent: 1472record: 0-3 | new rating: 1392 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1226 | Morris, Paul (1430) | Won 2-0 | +171517 |
| 2modern | 1211 | Rafferty, Dillon (1500) | Lost 0-2 | -191498 |
| 3modern | 1445 | Hughes, Scott (1499) | Lost 1-2 | -181480 |
| 4modern | 1565 | Gardner, Joseph (1482) | Lost 0-2 | -181462 |
| 5modern | 1529 | Nolan, Jeff (1434) | Lost 0-2 | -181444 |
| top | average opponent: 1469record: 1-4 | new rating: 1444 | ||