Gruber, Kevin
Current rating: 1406
Record: 3-9-1
| Grand Prix New Jersey 2017 (lim) (XLN limited) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 39 | Dieudonne, Alexandre (1500) | Lost 0-2 | -161398 |
| 2sealed | 370 | Van Lunen, Jacob (1673) | Lost 0-2 | -131385 |
| 3sealed | 481 | Marlett, Patrick (1466) | Won 2-0 | +191404 |
| 4sealed | 398 | Heacox, Daniel (1483) | Won 2-1 | +191423 |
| 5sealed | 394 | Black, Seth (1437) | Lost 1-2 | -171406 |
| top | average opponent: 1512record: 2-3 | new rating: 1406 | ||
| Grand Prix Kansas City 2011 (NPH limited) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Fry, Andy (1500) | Lost 0-2 | -171411 |
| 2sealed | 305 | Goldfarb, Howard (1482) | Draw 1-1 | +21413 |
| 3sealed | 313 | Nelson, John R (1428) | Won 2-1 | +181431 |
| 4sealed | 297 | Jones, Jeremiah (1499) | Lost 0-2 | -171414 |
| top | average opponent: 1477record: 1-2-1 | new rating: 1414 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 774 | Debrosky, Eric (1500) | Lost 0-2 | -181482 |
| 2standard | 902 | Heilker, David (1481) | Lost 0-2 | -181464 |
| 3standard | 1030 | Lebo, Neil (1463) | Lost 1-2 | -181446 |
| 4standard | 1034 | Woodland, John (1445) | Lost 0-2 | -181428 |
| top | average opponent: 1472record: 0-4 | new rating: 1428 | ||