Lonski, Joseph
Current rating: 1520
| Grand Prix Phoenix 2018 (modern) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 147 | Barnes, Grayson (1485) | Lost 0-2 | -191520 |
| top | record: 0-1 | new rating: 1520 | ||
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 138 | Haker, Elizabeth (1428) | Won 2-1 | +171534 |
| 2sealed | 218 | Spencer, Paul (1444) | Won 2-1 | +161550 |
| 3sealed | 23 | Gaieski, Ethan (1963) | Lost 0-2 | -111539 |
| 4sealed | 200 | Najeeb, Aris (1564) | Won 2-1 | +191558 |
| 5sealed | 225 | Duncan, Daniel (1494) | Won 2-1 | +171575 |
| 6sealed | 79 | Ruckman, Dustin (1523) | Lost 0-2 | -191556 |
| 7sealed | 174 | Sun, Qiushi (1647) | Lost 1-2 | -171539 |
| top | average opponent: 1581record: 4-3 | new rating: 1539 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1388 | Johnston, Jason (1500) | Lost 0-2 | -181482 |
| 2modern | 1488 | Sousa, Johnny (1503) | Won 2-0 | +181500 |
| 3modern | 1584 | Zumbrunnen, Kyle (1500) | Lost 1-2 | -181482 |
| 4modern | 1556 | Starbuck, Taylor (1533) | Won 2-0 | +191501 |
| 5modern | 1345 | Singleton, Zachary (1502) | Won 2-1 | +181519 |
| 6modern | 1240 | Nguyen, Corey (1482) | Won 2-1 | +181537 |
| 7modern | 1046 | Cranfill, Drew (1547) | Lost 0-2 | -181519 |
| 8modern | 922 | De La Cruz, Fernando M (1488) | Won 2-0 | +171536 |
| 9modern | 817 | Schmidt, Zack (1491) | Lost 0-2 | -191517 |
| top | average opponent: 1505record: 5-4 | new rating: 1517 | ||