Marshall, Zachery
Current rating: 1523
Record: 4-3
| Grand Prix Seattle 2018 (standard) (RIX standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 409 | Williams, Andrew (1456) | Lost 1-2 | -191481 |
| 2standard | 522 | Huteson, Tom (1774) | Won 2-1 | +231504 |
| 3standard | 567 | Chan, Ellis (1557) | Won 2-0 | +191523 |
| 4standard | 351 | Kaukoranta, Ville (1625) | Lost 1-2 | -161507 |
| 5standard | 477 | Chambers, Colron (1334) | Won 2-1 | +151522 |
| 6standard | 290 | Wiens, Dustin (1511) | Won 2-0 | +181540 |
| 7standard | 278 | Walterman, Austin (1629) | Lost 0-2 | -171523 |
| average opponent: 1555record: 4-3 | new rating: 1523 | |||