Gustafson, Peter
Current rating: 1433
Record: 13-19-2
| Grand Prix Austin 2020 (modern) | starting rating: 1421 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 252 | Coffey, Josh (1492) | Draw 1-1 | +21423 |
| 2modern | 181 | Steinbarth, Sean (1499) | Won 2-0 | +191442 |
| 3modern | 174 | Foreman, Matt (1821) | Lost 1-2 | -111431 |
| 4modern | 258 | Porter, Ben (1576) | Won 2-0 | +201451 |
| 5modern | 175 | Ta, Braden (1524) | Lost 0-2 | -161435 |
| 6modern | 232 | Thompson, Curtis (1337) | Won 2-1 | +161451 |
| 7modern | 167 | Wilson, Tristan (1485) | Lost 0-1 | -181433 |
| top | average opponent: 1534record: 3-3-1 | new rating: 1433 | ||
| Grand Prix Dallas-Fort Worth 2019 (modern) | starting rating: 1393 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 60 | McCollum, David (1451) | Won 2-1 | +191412 |
| 2modern | 159 | Wyatt, Richard (1501) | Won 2-0 | +191431 |
| 3modern | 215 | Gillet, Jason (1576) | Lost 0-2 | -151416 |
| 4modern | 137 | Hughes, Cody (1432) | Lost 1-2 | -181398 |
| 5modern | 274 | Franklin, Regina (1489) | Won 2-0 | +201418 |
| 6modern | 215 | Ulrich, Heather (1402) | Won 2-1 | +181436 |
| 7modern | 226 | Stewart, Drew (1644) | Lost 0-2 | -151421 |
| top | average opponent: 1499record: 4-3 | new rating: 1421 | ||
| Grand Prix Albuquerque 2016 (SOI limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Peacock, Rex (1500) | Lost 1-2 | -171427 |
| 2sealed | 368 | Rodriguez, Julien (1411) | Draw 1-1 | 01427 |
| 3sealed | 526 | Parsley, Christopher (1481) | Lost 1-2 | -171410 |
| 4sealed | 541 | Ryland, Teresa (1462) | Lost 0-2 | -171393 |
| top | average opponent: 1463record: 0-3-1 | new rating: 1393 | ||
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 512 | Vela, Rueben (1460) | Won 2-1 | +191448 |
| 2standard | 294 | Johannesen, Eric (1520) | Lost 1-2 | -171431 |
| 3standard | 385 | Quiroga Jr, Lionel (1500) | Lost 1-2 | -171414 |
| 4standard | 731 | Asbach, John (1682) | Won 2-1 | +231437 |
| 5standard | 650 | Sommerfeld, Daniel (1493) | Won 2-1 | +191456 |
| 6standard | 340 | Wennmacher, Justin (1507) | Lost 1-2 | -171439 |
| 7standard | 425 | McClay, Sean (1530) | Won 2-0 | +201459 |
| 8standard | 438 | Remelt, Shane (1629) | Lost 1-2 | -151444 |
| top | average opponent: 1540record: 4-4 | new rating: 1444 | ||
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 71 | Barbieri, John (1499) | Lost 0-2 | -171465 |
| 2sealed | 646 | Lewis, Wayne (1485) | Lost 0-2 | -181447 |
| 3sealed | 715 | Gaudet, Jake (1462) | Lost 0-2 | -181429 |
| top | average opponent: 1482record: 0-3 | new rating: 1429 | ||
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 20 | Valdez, Jesus (1500) | Won 2-0 | +181518 |
| 2standard | 101 | Lo, Steven (1518) | Lost 0-2 | -181500 |
| 3standard | 267 | Dawson, Christian (1624) | Lost 0-2 | -161484 |
| 4standard | 464 | Staples, Garrett (1430) | Won 2-1 | +171501 |
| 5standard | 369 | Green, Garryn (1451) | Lost 0-2 | -191482 |
| top | average opponent: 1505record: 2-3 | new rating: 1482 | ||