Griffith, Matthew L
Current rating: 1541
Record: 8-6
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 514 | Johnson, Courtney (1500) | Won 2-1 | +181519 |
| 2sealed | 350 | Evangelho, Ricardo (1558) | Lost 0-2 | -171502 |
| 3sealed | 517 | Shen, Yuting (1500) | Lost 1-2 | -181484 |
| 4sealed | 542 | Turel, Cyrus (1482) | Won 2-0 | +181502 |
| 5sealed | 437 | Saleh, Rajul (1467) | Won 2-0 | +171519 |
| 6sealed | 394 | Battistelli, Alex (1634) | Won 2-1 | +201539 |
| 7sealed | 223 | Pileggi, Riccardo (1652) | Won 2-0 | +201559 |
| 8sealed | 140 | Soto, Stefan (1561) | Lost 0-2 | -181541 |
| average opponent: 1544record: 5-3 | new rating: 1541 | |||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 470 | Pacheco, James D (1500) | Won 2-1 | +181518 |
| 2sealed | 404 | Welzbacher, Jordan (1518) | Won 2-0 | +181536 |
| 3sealed | 489 | Holland, Jeffery (1574) | Lost 0-2 | -171519 |
| 4sealed | 506 | Ellis, Thomas (1546) | Lost 1-2 | -181501 |
| 5sealed | 606 | Reardon, Mike (1501) | Won 2-0 | +181519 |
| 6sealed | 574 | Hostutler, Justin (1518) | Lost 0-2 | -181501 |
| average opponent: 1526record: 3-3 | new rating: 1501 | |||