Mathieson, Marcus
Current rating: 1583
Record: 12-9
| Grand Prix Washington DC 2014 (JOU limited) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 245 | Sundstrom, Mark (1446) | Won 2-0 | +161568 |
| 4sealed | 53 | Burns, Brian (1555) | Lost 1-2 | -181550 |
| 5sealed | 214 | Griffin, Patrick (1645) | Lost 1-2 | -171533 |
| 6sealed | 227 | Laufer, Daniel (1451) | Won 2-0 | +171550 |
| 7sealed | 219 | Nakamura, Shuhei (1864) | Won 2-0 | +241574 |
| 8sealed | 177 | Dunn, Ryan (1594) | Won 2-1 | +181592 |
| 9sealed | 134 | Turtenwald, Owen (2124) | Lost 1-2 | -91583 |
| average opponent: 1668record: 4-3 | new rating: 1583 | |||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 643 | Moloughney, David (1568) | Won 2-0 | +191519 |
| 2sealed | 18 | Stojak, Peter (1498) | Won 2-0 | +181537 |
| 3sealed | 15 | Fitchko, William (1594) | Won 2-0 | +191556 |
| 4sealed | 76 | Vance, James (1748) | Lost 0-2 | -151541 |
| 5sealed | 194 | Davis, Joshua (1488) | Lost 0-2 | -191522 |
| 6sealed | 492 | Skoglund, Daniel (1493) | Won 2-0 | +181540 |
| 7sealed | 348 | Dao, Phu (1831) | Won 2-1 | +231563 |
| 8sealed | 129 | Bellak, Justin (1551) | Won 0-0 | +181581 |
| 9sealed | 102 | Corcoran III, William (1581) | Won 2-0 | +181599 |
| 10draft | 67 | [anonymous] | Lost 0-2 | -171582 |
| 11draft | 37 | Dombek, Jeremy (1722) | Lost 0-2 | -151567 |
| 12draft | 81 | Polinsky, Ira (1576) | Lost 1-2 | -181549 |
| 13draft | 10 | Gottlieb, Justin (1677) | Won 2-1 | +201569 |
| 15draft | 16 | Bowers, Adam (1599) | Lost 0-2 | -171552 |
| average opponent: 1615record: 8-6 | new rating: 1552 | |||