Birol, John
Current rating: 1395
Record: 1-7
| Grand Prix Toronto 2012 (modern) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 53 | Diclemente, Joseph (1481) | Won 2-0 | +191447 |
| 2modern | 65 | Woo, Kenneth (1454) | Lost 1-2 | -181429 |
| 3modern | 291 | Matheson, Zach (1500) | Lost 0-2 | -161413 |
| 4modern | 400 | Elsek, Maxime (1441) | Lost 1-2 | -181395 |
| average opponent: 1469record: 1-3 | new rating: 1395 | |||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 221 | Herrmann, Nate (1500) | Lost 1-2 | -181482 |
| 2sealed | 219 | Furfari, Tommy (1482) | Lost 1-2 | -181464 |
| 3sealed | 296 | Jacques, Mike (1482) | Lost 1-2 | -181446 |
| 4sealed | 329 | Berry, Thomas S (1447) | Lost 0-2 | -181428 |
| average opponent: 1478record: 0-4 | new rating: 1428 | |||