Power, John
Current rating: 1473
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 308 | Thompson, Alan (1509) | Lost 1-2 | -181490 |
| 2modern | 322 | Parker, Anthony (1595) | Won 2-0 | +201510 |
| 3modern | 326 | Murray, Tyler (1500) | Lost 0-2 | -181492 |
| 4modern | 359 | Mccomber, Derek (1483) | Lost 1-2 | -191473 |
| top | average opponent: 1522record: 1-3 | new rating: 1473 | ||
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 283 | Specht, Cory (1500) | Lost 0-2 | -181448 |
| 2standard | 335 | Celesti, Vinny (1482) | Won 2-1 | +191467 |
| 3standard | 258 | Piedra, Christopher (1881) | Lost 0-2 | -111456 |
| 4standard | 408 | Ellis, Christopher (1462) | Won 2-0 | +181474 |
| 5standard | 287 | Fusak, Steven (1435) | Won 2-1 | +171491 |
| 6standard | 287 | Sioli, Xander (1514) | Won 2-0 | +191510 |
| 7standard | 105 | Miland, Scott (1542) | Lost 1-2 | -181492 |
| 8standard | 179 | David, Rheagan (1355) | Won 2-0 | +161508 |
| top | average opponent: 1521record: 5-3 | new rating: 1508 | ||
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 85 | Gooch, Spencer (1459) | Won 2-0 | +171517 |
| 2standard | 188 | Carter, Michael (1675) | Lost 1-2 | -151502 |
| 3standard | 528 | Meador, Kyle (1498) | Lost 0-2 | -181484 |
| 4standard | 504 | Villegas, Andrew (1465) | Lost 0-2 | -181466 |
| 5standard | 576 | Davis, Brandon (1475) | Won 2-0 | +181484 |
| 6standard | 522 | Bailey, Robert (1467) | Lost 1-2 | -181466 |
| top | average opponent: 1507record: 2-4 | new rating: 1466 | ||