Twombly, Dale A
Current rating: 1542
Record: 5-3-1
| Grand Prix Columbus 2010 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 213 | Alexander, Christopher (1461) | Won 2-0 | +171517 |
| 2legacy | 148 | Hill, Dan (1501) | Lost 1-2 | -181499 |
| 3legacy | 189 | Marsh, Jeremy (1500) | Won 2-1 | +181517 |
| 4legacy | 148 | Resides, Jon (1517) | Won 2-0 | +181535 |
| 5legacy | 84 | Smith, Harris (1691) | Won 2-0 | +211556 |
| 6legacy | 66 | Morgan, Christopher (1541) | Lost 0-2 | -181538 |
| 7legacy | 77 | Felske, David (1751) | Won 2-1 | +211559 |
| 8legacy | 50 | Ferris, Joel A (1569) | Draw 1-1 | +11560 |
| 9legacy | 62 | Azzano, Douglas (1594) | Lost 0-2 | -181542 |
| average opponent: 1570record: 5-3-1 | new rating: 1542 | |||