Mantel, David
Current rating: 1435
Record: 8-12-2
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 66 | Ostrander, Jonathan (1500) | Won 2-0 | +201431 |
| 2sealed | 150 | Steelman, Mikhail (1465) | Won 2-1 | +191450 |
| 3sealed | 75 | Costantini, Mark (1472) | Won 2-1 | +181468 |
| 4sealed | 62 | Ahnn, Peter (1500) | Won 2-0 | +191487 |
| 5sealed | 30 | Glancy, Ben (1518) | Lost 0-2 | -181469 |
| 6sealed | 132 | Desposito, Nicolas (1521) | Lost 0-2 | -171452 |
| 7sealed | 111 | Sloan, Stephen (1527) | Lost 1-2 | -171435 |
| top | average opponent: 1500record: 4-3 | new rating: 1435 | ||
| Grand Prix Atlanta 2012 (legacy) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 137 | Frederick, Alexander (1500) | Lost 1-2 | -171446 |
| 2legacy | 205 | Shepherd, Jessie (1499) | Draw 1-1 | +11447 |
| 3legacy | 312 | Flagg, Matt A (1449) | Lost 0-2 | -181429 |
| 4legacy | 418 | Comminos, Steven (1443) | Lost 0-2 | -181411 |
| top | average opponent: 1473record: 0-3-1 | new rating: 1411 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 556 | Ruggles, Jarred (1500) | Lost 1-2 | -181481 |
| 2extended | 572 | Caron, Alex (1482) | Draw 1-1 | 01481 |
| 3extended | 608 | Maddox, David (1482) | Won 2-0 | +181499 |
| 4extended | 600 | Mayes, Erik (1498) | Lost 0-2 | -181481 |
| 5extended | 631 | Tomacooper, Jeremy (1500) | Lost 1-2 | -181463 |
| top | average opponent: 1492record: 1-3-1 | new rating: 1463 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 74 | Lillard, Mario (1500) | Lost 0-2 | -181482 |
| 2sealed | 298 | Reynolds, Eric (1482) | Won 2-1 | +181500 |
| 3sealed | 158 | Alkhazraji, Joseph (1501) | Won 2-0 | +181518 |
| 4sealed | 117 | Spencer, Michael (1501) | Lost 1-2 | -181500 |
| 5sealed | 173 | Baker, Heath (1501) | Won 2-1 | +181518 |
| 6sealed | 133 | Leigh, Joe (1476) | Lost 0-2 | -191499 |
| top | average opponent: 1493record: 3-3 | new rating: 1499 | ||