Herweyer, Matthew
Current rating: 1509
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 390 | Sperling, Chris (1316) | Won 2-0 | +151503 |
| 3sealed | 314 | Pence, Matthew (1622) | Won 2-0 | +201523 |
| 4sealed | 87 | Pauloff, Nicholas (1853) | Lost 0-2 | -121511 |
| 5sealed | 330 | Jacques, Zachary (1400) | Won 2-1 | +161527 |
| 6sealed | 244 | Avila, Carlos (1519) | Lost 0-2 | -181509 |
| 7sealed | 335 | Colvin, Eric (1531) | Won 2-0 | +181527 |
| 8sealed | 171 | Chatters, Jake (1530) | Lost 0-2 | -181509 |
| top | average opponent: 1539record: 4-3 | new rating: 1509 | ||
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 96 | Huggins, Jack (1484) | Lost 1-2 | -181463 |
| 2standard | 537 | McIntosh, Robert (1482) | Won 2-1 | +181481 |
| 3standard | 704 | Doyle, Bailey (1461) | Won 2-1 | +181499 |
| 4standard | 396 | Hudson, Micheal (1467) | Won 2-1 | +171516 |
| 5standard | 135 | Schein, Jason (1890) | Lost 0-2 | -111505 |
| 6standard | 425 | Engelen, Mitchell (1522) | Won 2-0 | +181523 |
| 7standard | 211 | Cuillier, Paul (1503) | Lost 0-2 | -181505 |
| 8standard | 398 | Sheets, Brian (1572) | Lost 0-2 | -171488 |
| top | average opponent: 1548record: 4-4 | new rating: 1488 | ||
| Grand Prix Detroit 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 23 | Maddock, Todd (1463) | Won 2-0 | +171517 |
| 2sealed | 101 | Sato, Takanobu (1516) | Lost 1-2 | -181499 |
| 3sealed | 135 | Bell, Matthew (1482) | Lost 1-2 | -181481 |
| 4sealed | 195 | Montesano, Vito (1482) | Won 2-0 | +181499 |
| 5sealed | 133 | Sweezey, Scott (1486) | Lost 1-2 | -181481 |
| top | average opponent: 1486record: 2-3 | new rating: 1481 | ||