Tyree, Zack
Current rating: 1547
Record: 8-6-1
| Grand Prix Portland 2019 (ELD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 42 | Barrios, Vincent (1448) | Draw 1-1 | -11499 |
| 2standard | 116 | Ballance, Everett (1429) | Won 2-0 | +171516 |
| 3standard | 123 | Adamski, Piotr (1517) | Won 0-0 | +181534 |
| 4standard | 65 | Vaugeois, Christophe (1670) | Lost 0-2 | -161518 |
| 5standard | 120 | Forbes, Newell (1515) | Won 2-1 | +181536 |
| 6standard | 75 | Garrison, Christopher (1502) | Won 2-0 | +181554 |
| 7standard | 48 | Johnson, Mark0892 (1621) | Won 2-0 | +191573 |
| 8standard | 27 | Bernier, Kristopher (1573) | Won 2-1 | +181591 |
| 9standard | 14 | Abounorinejad, Dara (1688) | Lost 1-2 | -161575 |
| 10standard | 32 | Mei, Mike Songhao (1780) | Lost 0-2 | -151560 |
| 11standard | 41 | Dawe, Loren (1700) | Won 2-0 | +211581 |
| 12standard | 31 | Malcolm, Liam (1765) | Lost 0-2 | -151566 |
| 13standard | 39 | Himes, James (1582) | Won 2-1 | +181584 |
| 14standard | 30 | Hager, Nathan (1599) | Lost 1-2 | -171567 |
| 15standard | 38 | Drew, Edward (1461) | Lost 1-2 | -201547 |
| average opponent: 1590record: 8-6-1 | new rating: 1547 | |||