Pratt, Calvin
Current rating: 1492
| Grand Prix Los Angeles 2019 (modern) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 187 | Reinprecht, Basti (1500) | Won 2-0 | +181485 |
| 2modern | 225 | Shaw, Andrew (1643) | Won 2-1 | +211506 |
| 3modern | 15 | Gottstein, Jeff (1604) | Lost 0-2 | -161490 |
| 4modern | 231 | Nickolai, Matthew (1750) | Lost 1-2 | -131477 |
| 5modern | 513 | Gelman, Bernie (1501) | Won 2-1 | +181495 |
| 6modern | 300 | Westwood, Jake (1521) | Won 2-0 | +191514 |
| 7modern | 159 | Fischer, Dana (1305) | Lost 0-2 | -221492 |
| top | average opponent: 1546record: 4-3 | new rating: 1492 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 434 | Roussin, Maxime (1439) | Lost 0-2 | -191485 |
| 2modern | 655 | Kim, Jace (1482) | Lost 1-2 | -181467 |
| top | average opponent: 1461record: 0-2 | new rating: 1467 | ||
| Grand Prix Phoenix 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 336 | Rice, Newel (1500) | Won 2-0 | +181518 |
| 2modern | 231 | Clawson, Christopher (1502) | Lost 0-1 | -181500 |
| 3modern | 532 | Kauffman, Thomas (1490) | Lost 1-2 | -181482 |
| 4modern | 549 | Torbet, Tyler (1482) | Won 2-0 | +181500 |
| 5modern | 375 | Shukla, Neeraj (1749) | Won 2-1 | +221522 |
| 6modern | 287 | Colton, Aaron (1449) | Lost 1-2 | -191503 |
| 7modern | 358 | Blair, Andrew (1497) | Won 2-0 | +181521 |
| 8modern | 233 | Frank, Andrew (1598) | Lost 1-2 | -171504 |
| top | average opponent: 1533record: 4-4 | new rating: 1504 | ||