Polly, John
Current rating: 1466
Record: 3-5-1
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 364 | John G., (1540) | Won 2-0 | +191519 |
| 2sealed | 303 | Desgrange, Jeremy M (1553) | Lost 0-2 | -181501 |
| 3sealed | 536 | Kenjar, Jason (1471) | Won 2-0 | +181519 |
| 4sealed | 491 | Grannan, Jack (1611) | Lost 0-2 | -171502 |
| 5sealed | 378 | Tunstall, Jake (1483) | Lost 1-2 | -181484 |
| 6sealed | 467 | Setree, Chris (1454) | Won 2-0 | +181502 |
| 7sealed | 353 | Patrick, Steven Michae (1505) | Lost 0-2 | -181484 |
| 8sealed | 312 | Vodvarka, Jesse (1479) | Lost 1-2 | -181466 |
| 9sealed | 252 | Camp, Darryl (1497) | Draw 1-1 | 01466 |
| average opponent: 1510record: 3-5-1 | new rating: 1466 | |||