Bozarth, John
Current rating: 1436
Record: 3-7-1
| Grand Prix Portland 2018 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 477 | Fontaine, Yannick (1432) | Lost 1-2 | -191445 |
| 2modern | 608 | Slutsky, Simon (1658) | Lost 1-2 | -141431 |
| 3modern | 777 | Lindell, Matthew (1493) | Lost 1-2 | -171414 |
| 4modern | 821 | Bickham, Brady (1446) | Won 2-1 | +191433 |
| 5modern | 711 | Vela, Jacob (1465) | Won 2-1 | +181451 |
| 6modern | 597 | Edelglass, Brandon (1588) | Lost 1-2 | -151436 |
| average opponent: 1514record: 2-4 | new rating: 1436 | |||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 270 | Ledesma, Zach (1416) | Lost 0-2 | -201480 |
| 2standard | 573 | Plant, John (1522) | Lost 0-2 | -171463 |
| 3standard | 783 | Green, Tucker (1484) | Lost 0-2 | -171446 |
| 4standard | 769 | Schmitz, Adam (1445) | Won 2-0 | +181464 |
| 5standard | 677 | Lazzaro, Tami (1467) | Draw 1-1 | 01464 |
| average opponent: 1467record: 1-3-1 | new rating: 1464 | |||