Irwin, Keith
Current rating: 1510
Record: 8-8
| Grand Prix Minneapolis 2009 (ZEN limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 382 | Berry, Donald (1500) | Won 2-0 | +191485 |
| 2sealed | 127 | Carroll, David (1518) | Won 2-0 | +191504 |
| 3sealed | 180 | Bush, James (1522) | Lost 0-2 | -181486 |
| 4sealed | 173 | Coqueiro, Rafael S (1620) | Lost 1-2 | -161470 |
| 5sealed | 329 | Bluhm, Todd (1500) | Won 2-0 | +191489 |
| 6sealed | 298 | ATmore, Jack (1517) | Won 2-1 | +191508 |
| 7sealed | 148 | Schwimmer, Andrew (1535) | Won 2-0 | +181526 |
| 8sealed | 152 | Povish, Dan (1554) | Won 2-1 | +191545 |
| 9sealed | 49 | Viers, Trey (1572) | Won 2-0 | +181563 |
| 10draft | 32 | Baroni, Stephen (1546) | Lost 0-2 | -181545 |
| 12draft | 40 | Vanderkin, Kyle (1596) | Lost 0-2 | -171528 |
| 13draft | 50 | Hoyt, Jair W (1555) | Lost 1-2 | -181510 |
| average opponent: 1545record: 7-5 | new rating: 1510 | |||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 17 | Alden, Matt (1436) | Lost 0-2 | -191481 |
| 2legacy | 487 | Fisher-Wirth, Caleb (1482) | Lost 0-2 | -181463 |
| 3legacy | 516 | Morris, Kelly (1464) | Won 2-1 | +181481 |
| 4legacy | 513 | Price, David (1682) | Lost 0-2 | -151466 |
| average opponent: 1516record: 1-3 | new rating: 1466 | |||