Derdzinski, Mark
Current rating: 1481
Record: 12-14
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 11 | Moore, Joe (1567) | Lost 0-2 | -181499 |
| 4sealed | 125 | Rhett, Brian (1485) | Lost 1-2 | -181481 |
| 5sealed | 166 | Vanderniet, Kyle (1500) | Won 2-0 | +191500 |
| 6sealed | 100 | Limber, Jerry (1480) | Lost 0-2 | -191481 |
| top | average opponent: 1508record: 1-3 | new rating: 1481 | ||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 106 | Hughes, Shaun (1412) | Lost 0-2 | -201517 |
| 4standard | 376 | West, Michael (1523) | Won 2-0 | +181535 |
| 5standard | 242 | Vasquez, David (1535) | Won 2-1 | +181553 |
| 6standard | 80 | Pascual, Warlord Jon (1556) | Lost 0-2 | -181535 |
| 7standard | 314 | Howden, Robert (1524) | Lost 1-2 | -181517 |
| top | average opponent: 1510record: 2-3 | new rating: 1517 | ||
| Grand Prix Oakland 2013 (M14 limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 118 | Edwards, Allen (1537) | Lost 1-2 | -171467 |
| 4sealed | 118 | Pei, Joseph (1589) | Lost 1-2 | -161451 |
| 5sealed | 118 | LeRoux, Colette (1483) | Won 2-1 | +191470 |
| 6sealed | 118 | Jacobson, Matthew (1521) | Won 2-0 | +191489 |
| 7sealed | 118 | Berni, Roberto (1682) | Won 2-0 | +211510 |
| 8sealed | 125 | Chrobak, Mike (1555) | Won 2-1 | +191529 |
| 9sealed | 120 | Dipadua, James (1556) | Won 2-0 | +181547 |
| 11draft | 26 | du Mee, Ian (1619) | Won 2-1 | +201567 |
| 12draft | 65 | Gonzalez, Miguel (1628) | Lost 0-2 | -171550 |
| 13draft | 32 | Brueseke, Benjamin (1682) | Lost 0-2 | -161534 |
| 14draft | 44 | Freeman, Brendon (1648) | Won 2-0 | +201554 |
| 15draft | 61 | Colloran, Kenyon (1587) | Lost 0-2 | -171537 |
| top | average opponent: 1591record: 7-5 | new rating: 1537 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 286 | Ramirez, Alejandro (1559) | Won 2-0 | +191519 |
| 3sealed | 20 | Alden, Drew (1536) | Lost 0-2 | -181501 |
| 4sealed | 200 | Cote, Eric (1470) | Won 2-0 | +181519 |
| 5sealed | 154 | Parker, James (1463) | Lost 0-2 | -191500 |
| 6sealed | 185 | Fleurant, Jason (1610) | Lost 0-2 | -161484 |
| top | average opponent: 1528record: 2-3 | new rating: 1484 | ||