Manning, Devin
Current rating: 1614
Record: 18-12
| Grand Prix Atlanta 2014 (JOU limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 378 | Martin, Patrick (1500) | Won 2-0 | +171578 |
| 2sealed | 262 | Rao, Nikhil (1482) | Won 2-1 | +161594 |
| 3sealed | 327 | Bush, Damon (1537) | Lost 1-2 | -191575 |
| 4sealed | 591 | Cuvelier, John (1864) | Won 2-1 | +231598 |
| 5sealed | 314 | Becker, Shawn (1604) | Won 2-1 | +181616 |
| 6sealed | 376 | Newby, John (1551) | Won 2-0 | +171633 |
| 7sealed | 278 | Lanceford, Vincent (1599) | Won 2-1 | +171650 |
| 8sealed | 259 | Ingersoll, Chris (1661) | Lost 1-2 | -181632 |
| 9sealed | 268 | Huberty, Henry (1583) | Lost 1-2 | -181614 |
| top | average opponent: 1598record: 6-3 | new rating: 1614 | ||
| Grand Prix Atlanta 2012 (legacy) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 109 | Azcarate, Pablo E (1466) | Lost 1-2 | -191491 |
| 2legacy | 216 | Culverhouse, Chris (1483) | Won 2-0 | +181509 |
| 3legacy | 220 | Miller, Andrew (1523) | Lost 0-2 | -181491 |
| 4legacy | 406 | Grace, Jared (1482) | Won 2-0 | +181509 |
| 5legacy | 290 | Smith, Charles (1500) | Won 2-0 | +181527 |
| 6legacy | 218 | Bargo, Craig (1505) | Won 2-1 | +181545 |
| 7legacy | 157 | Burgin, Miles (1486) | Won 2-1 | +171562 |
| 8legacy | 91 | Ho, David (1603) | Won 2-0 | +181580 |
| 9legacy | 93 | Wade, Brian (1489) | Lost 0-2 | -191561 |
| top | average opponent: 1504record: 6-3 | new rating: 1561 | ||
| Grand Prix Kansas City 2011 (NPH limited) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 123 | Hogan, Scott (1465) | Lost 0-2 | -201522 |
| 5sealed | 85 | Cabral, Sean (1502) | Lost 1-2 | -181504 |
| 6sealed | 153 | Taber, Christopher K (1467) | Won 2-1 | +171521 |
| 7sealed | 186 | Cox, Patrick (1925) | Lost 1-2 | -111510 |
| top | average opponent: 1590record: 1-3 | new rating: 1510 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 431 | Goff, Ryan (1518) | Won 2-1 | +181518 |
| 3extended | 451 | Held, Eric J (1730) | Won 2-1 | +221540 |
| 4extended | 456 | Braverman, Phillip (1540) | Won 2-0 | +181558 |
| 5extended | 404 | Popick, Joel (1676) | Lost 1-2 | -161542 |
| 6extended | 466 | Sosna, Ryan (1556) | Lost 1-2 | -171525 |
| 7extended | 472 | Neto, Romario (1526) | Won 2-1 | +181543 |
| 8extended | 438 | McCord, Christopher (1472) | Won 2-0 | +161559 |
| 9extended | 449 | Schauf, Scott (1580) | Lost 0-2 | -171542 |
| top | average opponent: 1575record: 5-3 | new rating: 1542 | ||