Schaffer, Joshua
Current rating: 1437
Record: 3-7-2
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 128 | Sowell, Adam (1737) | Won 2-0 | +231468 |
| 4sealed | 116 | Allan, Chris (1499) | Won 2-1 | +191487 |
| 5sealed | 17 | Prieto, Danilo (1567) | Lost 0-2 | -171470 |
| 6sealed | 177 | Pifko, David (1560) | Lost 0-2 | -161454 |
| 7sealed | 234 | Fonner, Charles (1537) | Lost 0-2 | -171437 |
| average opponent: 1580record: 2-3 | new rating: 1437 | |||
| Grand Prix Minneapolis 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 301 | Schrenk, Gordon (1526) | Lost 0-2 | -181482 |
| 2standard | 423 | Munson, Nathan (1452) | Lost 0-2 | -181464 |
| 3standard | 651 | Limesand, Josh (1464) | Won 2-0 | +181482 |
| 4standard | 651 | Bill, Joshua (1421) | Lost 1-2 | -191463 |
| 5standard | 637 | Bryant, Stephen (1463) | Draw 1-1 | 01463 |
| 6standard | 593 | Valadares, Diogo (1463) | Lost 1-2 | -181445 |
| 7standard | 524 | Syverson, Scott (1446) | Draw 1-1 | 01445 |
| average opponent: 1462record: 1-4-2 | new rating: 1445 | |||