Berry, Donald
Current rating: 1485
Record: 2-3
| Grand Prix Minneapolis 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 382 | Irwin, Keith (1466) | Lost 0-2 | -191481 |
| 2sealed | 472 | Chiesa, Christopher (1487) | Won 2-1 | +181499 |
| 3sealed | 426 | Bartolomei, Iain (1680) | Lost 0-2 | -141485 |
| 4sealed | 363 | Mcgown, Brooks J (1481) | Lost 1-2 | -181467 |
| 5sealed | 426 | Blunk, Jeffrey (1464) | Won 2-1 | +181485 |
| average opponent: 1516record: 2-3 | new rating: 1485 | |||