Kellman, Jonah
Current rating: 1512
Record: 7-6
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 358 | Burniche, Ryan (1500) | Won 2-1 | +171551 |
| 2sealed | 336 | Wright, Christian (1545) | Lost 0-2 | -181533 |
| 3sealed | 635 | Clark, Cliff (1426) | Lost 0-2 | -201513 |
| 4sealed | 728 | Lind, Sean (1417) | Won 2-0 | +161529 |
| 5sealed | 591 | Gemme, Mike (1574) | Lost 1-2 | -171512 |
| average opponent: 1493record: 2-3 | new rating: 1512 | |||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 34 | Sliva, Matt (1500) | Won 2-1 | +181518 |
| 2sealed | 264 | Hutchison, Tyler (1518) | Lost 1-2 | -181500 |
| 3sealed | 342 | Lolos, Arthur (1499) | Won 2-0 | +181518 |
| 4sealed | 370 | Labelle, Olivier (1467) | Lost 0-2 | -191499 |
| 5sealed | 444 | Schirling, Andrew (1424) | Won 2-1 | +171516 |
| 6sealed | 281 | Wenokor, Eric (1448) | Won 2-0 | +161532 |
| 7sealed | 279 | Ladouceur, Sebastien (1544) | Won 2-1 | +191551 |
| 8sealed | 185 | Yeung, Ling (1618) | Lost 1-2 | -171534 |
| average opponent: 1502record: 5-3 | new rating: 1534 | |||