Marshall, Alex
Current rating: 1560
| Grand Prix Providence 2015 (DTK standard) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 173 | Kozikis, Jeffrey (1500) | Won 2-0 | +181519 |
| 2standard | 194 | Hackman, Thomas (1546) | Won 2-1 | +191538 |
| 3standard | 152 | Wright, Christopher (1485) | Won 2-1 | +171555 |
| 4standard | 26 | Cheung, Raymond (1618) | Won 2-0 | +191574 |
| 5standard | 35 | Tautic, Raymond (1828) | Won 2-1 | +231597 |
| 6standard | 17 | Lopez, Isaac (1538) | Lost 1-2 | -191578 |
| 7standard | 86 | Wetzel, Kevin (1630) | Won 2-0 | +191597 |
| 8standard | 29 | Person, Brian (1589) | Lost 1-2 | -191578 |
| 9standard | 55 | Tellier, Matt (1579) | Lost 0-0 | -181560 |
| top | average opponent: 1590record: 6-3 | new rating: 1560 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 350 | Pingrey, Tyler (1466) | Won 2-1 | +161558 |
| 2legacy | 18 | Walls, John (1532) | Lost 0-2 | -181540 |
| 3legacy | 362 | Mackay, Richard (1515) | Lost 0-2 | -191521 |
| 4legacy | 467 | Hoge, Greggory (1482) | Won 2-0 | +181539 |
| 5legacy | 324 | Mckinney, Stephen (1503) | Lost 1-2 | -191520 |
| 6legacy | 413 | Goode, Edward (1486) | Lost 0-2 | -191501 |
| top | average opponent: 1497record: 2-4 | new rating: 1501 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 118 | Cervino, Thomas (1518) | Won 2-1 | +181518 |
| 2legacy | 9 | Hatfield, Jesse (1761) | Lost 1-2 | -131505 |
| 3legacy | 606 | Carlin, Matthew (1379) | Won 2-0 | +151520 |
| 4legacy | 321 | Vance, James (1684) | Won 2-0 | +211541 |
| 5legacy | 310 | Blough, Alex (1571) | Lost 0-2 | -171524 |
| 6legacy | 655 | McShane, Brendan (1553) | Lost 1-2 | -181506 |
| 7legacy | 482 | Glancy, Ben (1465) | Won 2-0 | +181524 |
| 8legacy | 313 | McLaughlin, Sage (1529) | Won 2-0 | +181542 |
| top | average opponent: 1558record: 5-3 | new rating: 1542 | ||