DeFever, Joe
Current rating: 1471
Record: 5-7
| Grand Prix Detroit 2019 (M20 limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 169 | Beernink, Riley (1525) | Won 2-0 | +191502 |
| 2sealed | 152 | Arnold, Chris (1616) | Lost 0-2 | -161486 |
| 3sealed | 219 | Anderson, Branden (1485) | Won 2-1 | +181504 |
| 4sealed | 126 | Scharenbroch, Nik (1641) | Lost 0-2 | -161488 |
| 5sealed | 181 | Lloyd, Alex (1505) | Lost 1-2 | -171471 |
| average opponent: 1555record: 2-3 | new rating: 1471 | |||
| Grand Prix Detroit 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1 | Babbitt, Raymond (1388) | Won 2-0 | +161516 |
| 2modern | 53 | Bobek, Brian (1548) | Lost 0-2 | -171499 |
| 3modern | 791 | Lisitza, Richard (1432) | Won 2-1 | +161515 |
| 4modern | 731 | VanMaele, Ryan (1530) | Lost 1-2 | -171498 |
| 5modern | 780 | Domocmat, Jeremy (1596) | Won 2-0 | +191517 |
| 6modern | 607 | Musselman, Reuben (1544) | Lost 1-2 | -171500 |
| 7modern | 564 | Eichelberger, Gregory (1554) | Lost 1-2 | -171483 |
| average opponent: 1513record: 3-4 | new rating: 1483 | |||