Peterson, Zachary
Current rating: 1523
Record: 8-8
| Grand Prix Seattle 2019 (MH1 limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| B1sealed | 483 | Philbrook, Christopher (1469) | Won 2-0 | +171498 |
| B2sealed | 444 | Silva, Austin (1603) | Won 2-1 | +201518 |
| B4sealed | 23 | Myers, Caleb (1815) | Won 2-1 | +231541 |
| B5sealed | 2 | Jacobson, Mark (2098) | Lost 1-2 | -81533 |
| B6sealed | 85 | Marsh, Chris (1502) | Lost 1-2 | -191514 |
| B7sealed | 131 | Bolick, Robbie (1742) | Won 2-0 | +221536 |
| B8sealed | 74 | Espinosa, Ivan (1789) | Lost 0-2 | -131523 |
| average opponent: 1717record: 4-3 | new rating: 1523 | |||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 522 | Gould, Joshua (1500) | Lost 0-2 | -181482 |
| 2standard | 421 | Duncan, Bailey (1482) | Lost 0-2 | -181464 |
| 3standard | 775 | Gucker, Gabriel (1462) | Won 2-1 | +181482 |
| 4standard | 632 | Evans, Doug (1484) | Won 2-1 | +181500 |
| 5standard | 537 | Doyle, Bailey (1432) | Won 2-1 | +171517 |
| 6standard | 420 | Brown, Joel (1366) | Lost 1-2 | -211496 |
| 7standard | 496 | Salazar, Justin (1501) | Lost 1-2 | -181478 |
| 8standard | 439 | Ortiz, David (1558) | Won 2-0 | +201498 |
| 9standard | 339 | Gipson, Jordan (1551) | Lost 0-0 | -171481 |
| average opponent: 1482record: 4-5 | new rating: 1481 | |||