Roddy, Joseph
Current rating: 1493
Record: 7-8
| Grand Prix Atlantic City 2015 (DTK limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 508 | English, Rob (1500) | Won 2-0 | +171524 |
| 2sealed | 191 | Radican, Kyle (1536) | Lost 1-2 | -171507 |
| 3sealed | 449 | Ma, Jesse (1550) | Won 2-0 | +181525 |
| 4sealed | 234 | Hoegner, Danielle (1423) | Won 2-0 | +171542 |
| 5sealed | 294 | Farrell, Alexander (1587) | Lost 1-2 | -181524 |
| 6sealed | 390 | McPhail, Daniel (1615) | Won 2-0 | +201544 |
| 7sealed | 257 | Torres, Kyle (1539) | Lost 1-2 | -181526 |
| 8sealed | 279 | Pastorinni, Luckas (1684) | Lost 0-2 | -151511 |
| 9sealed | 227 | Deerwester, Isaac (1507) | Lost 0-2 | -181493 |
| average opponent: 1549record: 4-5 | new rating: 1493 | |||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 59 | Kinney, Michael (1407) | Won 2-1 | +161516 |
| 2sealed | 65 | Jenkins, Joe (1493) | Won 2-0 | +181534 |
| 3sealed | 303 | Glantzman, Joshua (1832) | Won 2-1 | +231557 |
| 4sealed | 42 | Calcano, Christian (1752) | Lost 1-2 | -141543 |
| 5sealed | 253 | Remeika, John (1536) | Lost 1-2 | -181525 |
| 6sealed | 267 | Delaney, Connor (1523) | Lost 1-2 | -181507 |
| average opponent: 1590record: 3-3 | new rating: 1507 | |||