Griffin, Joseph
Current rating: 1432
Record: 2-6
| Grand Prix Oklahoma City 2017 (modern) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 364 | Waggoner, Collin (1500) | Won 2-1 | +191465 |
| 2modern | 124 | Marx, Matthew (1554) | Lost 0-2 | -171448 |
| 3modern | 378 | Wyss, Benjamin (1528) | Won 2-1 | +201468 |
| 4modern | 401 | Lewis, Matthew [USA] (1405) | Lost 0-2 | -191449 |
| 5modern | 502 | Thimsen, Tyler (1515) | Lost 0-2 | -171432 |
| average opponent: 1500record: 2-3 | new rating: 1432 | |||
| Grand Prix Phoenix 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 388 | Myers, Clayton (1470) | Lost 0-2 | -191481 |
| 2standard | 401 | Jones, Alek (1489) | Lost 1-2 | -171464 |
| 3standard | 596 | Nordquest, Justin (1464) | Lost 0-2 | -181446 |
| average opponent: 1474record: 0-3 | new rating: 1446 | |||