Costelloe, Matthew
Current rating: 1446
Record: 0-3-1
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 56 | Rothermel, Chris M (1500) | Lost 0-2 | -181482 |
| 2sealed | 261 | Smith, Bryon (1465) | Draw 1-1 | 01482 |
| 3sealed | 312 | Galloway, Patrick (1482) | Lost 1-2 | -181464 |
| 4sealed | 357 | Johnson, David (1457) | Lost 0-2 | -181446 |
| average opponent: 1476record: 0-3-1 | new rating: 1446 | |||