Gassen, Nathan
Current rating: 1434
Record: 11-16
| Grand Prix Madison 2019 (WAR limited) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 174 | Lukes, Scott (1474) | Won 2-1 | +191452 |
| 2sealed | 12 | Kobler, Alexander (1503) | Won 2-0 | +191471 |
| 3sealed | 210 | Piotrowiak, Matthew (1654) | Won 2-0 | +211492 |
| 4sealed | 6 | Andrews, Matthew (1817) | Lost 0-2 | -121480 |
| 5sealed | 55 | Dartt, Andrew (1570) | Lost 0-2 | -161464 |
| 6sealed | 218 | Hunt, Kevin (1534) | Lost 0-2 | -171447 |
| 7sealed | 206 | Guevarra, Nicolo (1739) | Lost 0-2 | -131434 |
| top | average opponent: 1613record: 3-4 | new rating: 1434 | ||
| Grand Prix Minneapolis 2018 (M19 limited) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 17 | Bush, Adam (1498) | Won 2-1 | +191462 |
| 2sealed | 58 | Whittington, Michael (1501) | Won 2-0 | +191481 |
| 3sealed | 99 | Marquardt, Robert (1681) | Lost 1-2 | -141467 |
| 4sealed | 409 | Vega, Daniel (1671) | Lost 0-2 | -151452 |
| 5sealed | 450 | Radloff, Michael (1408) | Lost 0-2 | -191433 |
| top | average opponent: 1552record: 2-3 | new rating: 1433 | ||
| Grand Prix Indianapolis 2017 (HOU limited) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 307 | Tracy, Daniel (1498) | Won 2-1 | +181495 |
| 2sealed | 125 | Ruggles, Randall (1639) | Lost 0-2 | -151480 |
| 3sealed | 286 | Eckart, Quinn (1436) | Lost 0-2 | -191461 |
| 4sealed | 482 | Mitchler, Andy (1483) | Lost 1-2 | -181443 |
| 5sealed | 508 | Martin, Christopher (1401) | Lost 0-2 | -181425 |
| 6sealed | 471 | Delaney, Brian (1453) | Won 2-0 | +181443 |
| top | average opponent: 1485record: 2-4 | new rating: 1443 | ||
| Grand Prix Milwaukee 2016 (KLD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 440 | Jardine, Kevin (1396) | Lost 0-2 | -201480 |
| 2sealed | 515 | Vachon, David (1408) | Lost 1-2 | -191461 |
| 3sealed | 556 | Dodson, Tom (1468) | Won 2-0 | +181479 |
| 4sealed | 461 | Stream, David (1478) | Won 2-0 | +181497 |
| 5sealed | 383 | Kalia, Kunal (1475) | Lost 1-2 | -181479 |
| 6sealed | 459 | Allen, Ryan (1333) | Lost 0-2 | -211458 |
| 7sealed | 443 | Schwanebeck, Harlan (1464) | Won 2-0 | +181476 |
| 8sealed | 358 | Antonopoulos, Louis (1513) | Lost 1-2 | -171459 |
| 9sealed | 319 | Dagang, Jerome (1471) | Won 2-0 | +181477 |
| top | average opponent: 1445record: 4-5 | new rating: 1477 | ||