Armstrong, Jon
Current rating: 1517
Record: 2-1
| Grand Prix Minneapolis 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 344 | McGowan, Brian (1448) | Won 2-0 | +171517 |
| 2sealed | 265 | Limbert, Travis (1506) | Won 2-0 | +181535 |
| 3sealed | 104 | Kirby, Johnathan J (1535) | Lost 1-2 | -181517 |
| average opponent: 1497record: 2-1 | new rating: 1517 | |||