Guinn, Kevin
Current rating: 1467
Record: 5-7
| Grand Prix Detroit 2016 (modern) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 30 | Gothberg, Caleb (1576) | Lost 0-2 | -171485 |
| 2modern | 947 | Coleson, Brandon (1447) | Lost 0-2 | -181467 |
| 3modern | 1102 | Doty, Taylor (1463) | Won 2-0 | +181485 |
| 4modern | 1036 | Zeitz, Ryan (1482) | Won 2-0 | +181503 |
| 5modern | 748 | Schmuckler, Brett (1513) | Lost 0-2 | -181485 |
| 6modern | 875 | Layton, William (1481) | Lost 1-2 | -181467 |
| average opponent: 1494record: 2-4 | new rating: 1467 | |||
| Grand Prix Detroit 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 98 | Connor, Nathan (1629) | Won 2-1 | +201520 |
| 2modern | 316 | Colby-robbins, Derek (1475) | Lost 0-0 | -181502 |
| 3modern | 491 | Perera, Vittorio (1639) | Won 2-0 | +201522 |
| 4modern | 435 | Learnihan-Sylvester, Sean (1462) | Lost 0-2 | -191503 |
| 5modern | 508 | Higginbottom, James (1450) | Won 2-1 | +171520 |
| 6modern | 401 | Florio, Kevin (1524) | Lost 1-2 | -181502 |
| average opponent: 1530record: 3-3 | new rating: 1502 | |||