Porter, Donnie
Current rating: 1462
Record: 3-5-1
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1 | Andonian, Jorj (1500) | Draw 1-1 | 01500 |
| 2modern | 657 | Colwell, Anthony (1465) | Lost 0-2 | -191481 |
| 3modern | 1076 | Loiacono, Michael (1481) | Lost 1-2 | -181463 |
| 4modern | 1194 | Andryshak, Ryan (1460) | Lost 0-2 | -181445 |
| 5modern | 1140 | Stano, Tracy (1444) | Won 2-0 | +181463 |
| 6modern | 934 | Sateia, Joshua (1462) | Lost 0-2 | -181445 |
| 7modern | 781 | Rumski, Zac (1556) | Won 2-0 | +201465 |
| 8modern | 599 | Lennon, Trent (1409) | Lost 1-2 | -191446 |
| 9modern | 493 | Gums, Wes (1330) | Won 2-1 | +161462 |
| average opponent: 1456record: 3-5-1 | new rating: 1462 | |||