Kerkau, Mathew
Current rating: 1469
Record: 5-7
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 268 | Moss, Justin (1401) | Won 2-1 | +161521 |
| 2legacy | 69 | Clementz, Zachary (1622) | Lost 1-2 | -161505 |
| 3legacy | 253 | Wilbur, Jc (1485) | Lost 1-2 | -181487 |
| 4legacy | 337 | Buckholz, Louis (1484) | Lost 0-2 | -181469 |
| average opponent: 1498record: 1-3 | new rating: 1469 | |||
| Grand Prix Hartford 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 213 | Battis, John (1500) | Lost 0-2 | -181482 |
| 2modern | 457 | Haak, Bryan (1652) | Lost 1-2 | -151467 |
| 3modern | 868 | Rosenzweig, Shigeo (1519) | Won 2-0 | +191486 |
| 4modern | 613 | Meadow, Eric (1403) | Won 2-0 | +171503 |
| 5modern | 454 | Silver, Jeffrey (1666) | Won 2-0 | +201523 |
| 6modern | 370 | Nowak, Richard (1507) | Won 2-1 | +181541 |
| 7modern | 265 | Smith, Tim (1531) | Lost 0-2 | -181523 |
| 8modern | 351 | Erickson, Zachery (1542) | Lost 1-2 | -181505 |
| average opponent: 1540record: 4-4 | new rating: 1505 | |||