Piunti, Marc R
Current rating: 1464
Record: 1-3
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 21 | Hobbs, Travis (1500) | Won 2-0 | +181518 |
| 2legacy | 101 | Carrier, Evan (1541) | Lost 1-2 | -181500 |
| 3legacy | 363 | Gibbons, Christopher C (1478) | Lost 0-2 | -181482 |
| 4legacy | 406 | Olson, Daniel A (1481) | Lost 1-2 | -181464 |
| average opponent: 1500record: 1-3 | new rating: 1464 | |||