Zabowski, Brian
Current rating: 1427
| Grand Prix Detroit 2016 (modern) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 78 | Penton, Dan (1468) | Won 2-1 | +191455 |
| 2modern | 85 | D'Addario, Daniel (1590) | Won 2-1 | +201475 |
| 3modern | 98 | Timmerman, Trace (1535) | Lost 1-2 | -171458 |
| 4modern | 407 | Schmidt, Adam (1531) | Lost 0-2 | -161442 |
| 5modern | 650 | Moisan, Tony (1528) | Lost 1-2 | -171425 |
| 6modern | 770 | Morrow, Joshua (1445) | Won 2-0 | +181443 |
| 7modern | 576 | Robinson, Stephen (1505) | Lost 0-2 | -161427 |
| top | average opponent: 1515record: 3-4 | new rating: 1427 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 25 | Gannon, Devin (1535) | Lost 1-2 | -171486 |
| 4modern | 660 | Windhorst, Derek (1610) | Lost 1-2 | -161470 |
| 5modern | 763 | Brown, Brad (1565) | Lost 0-2 | -161454 |
| 6modern | 918 | Degelman, Erik (1474) | Lost 0-2 | -181436 |
| top | average opponent: 1546record: 0-4 | new rating: 1436 | ||
| Grand Prix Detroit 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 297 | Gushen, Dan (1634) | Lost 0-0 | -161484 |
| 3modern | 538 | Allegood, Jeremy (1482) | Lost 1-2 | -181466 |
| 4modern | 562 | Stuckwisch, Nicholai (1502) | Won 2-0 | +191485 |
| 5modern | 381 | Verdoni, Ugo (1483) | Won 2-1 | +181503 |
| 6modern | 341 | Francoeur, Paul (1486) | Won 2-1 | +181521 |
| 7modern | 280 | Barge, Spencer (1537) | Won 2-1 | +181539 |
| 8modern | 107 | Baeckstrom, Andrew (1542) | Lost 1-2 | -181521 |
| 9modern | 188 | Skorik, Andrew (1525) | Lost 0-2 | -181503 |
| top | average opponent: 1524record: 4-4 | new rating: 1503 | ||