Brztowski, Bobby
Current rating: 1435
| Grand Prix Detroit 2013 (modern) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 299 | LaPlante, Ryan (1516) | Lost 0-0 | -161419 |
| 3modern | 468 | Arant, Gary (1622) | Won 2-1 | +211440 |
| 4modern | 378 | Vance, James (1734) | Won 2-0 | +231463 |
| 5modern | 323 | Droge, Kurtis (1661) | Lost 0-2 | -141449 |
| 6modern | 336 | Plasterer, Derek (1476) | Draw 1-1 | +11450 |
| 7modern | 333 | Penn, Dustin (1640) | Lost 0-0 | -151435 |
| top | average opponent: 1608record: 2-3-1 | new rating: 1435 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 562 | Freeman, Brendon (1618) | Lost 1-2 | -151429 |
| 5sealed | 559 | Jentis, Sean (1536) | Won 2-1 | +201449 |
| 6sealed | 428 | Fugatt, Elias (1553) | Won 2-0 | +201469 |
| 7sealed | 348 | Quinlan, Thomas (1544) | Lost 1-2 | -171452 |
| 8sealed | 358 | Hershman, Jon (1494) | Lost 0-2 | -171435 |
| top | average opponent: 1549record: 2-3 | new rating: 1435 | ||
| Grand Prix Chicago 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 40 | Ragusa, Christopher (1500) | Lost 0-2 | -181482 |
| 2modern | 384 | Barnes, Toby (1482) | Lost 0-2 | -181464 |
| 3modern | 471 | Lapine, John (1464) | Lost 1-2 | -181446 |
| 4modern | 523 | Hopkins, James (1364) | Won 2-1 | +171463 |
| 5modern | 471 | Schubert, Matt (1464) | Won 1-0 | +181481 |
| 6modern | 375 | Nett, Brad (1482) | Lost 1-2 | -181463 |
| 7modern | 353 | Hay, Ryan R (1464) | Lost 1-2 | -181445 |
| 8modern | 311 | Lingvay, William (1416) | Won 2-1 | +171462 |
| 9modern | 230 | Murphy, Lorcan E (1463) | Lost 0-2 | -181444 |
| top | average opponent: 1455record: 3-6 | new rating: 1444 | ||