Mellem, David
Current rating: 1599
Record: 20-14
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1581 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 497 | Frias, Danny (1500) | Won 2-1 | +161597 |
| 2modern | 83 | Nguyen, Henry (1534) | Won 2-1 | +171614 |
| 3modern | 30 | Hu, Jonathan (1811) | Won 2-1 | +221636 |
| 4modern | 18 | Dominguez, Javier (1829) | Lost 0-2 | -151621 |
| 5modern | 302 | Tierney, Seth (1557) | Lost 0-2 | -191602 |
| 6modern | 563 | Jacobs, Jeffery (1494) | Won 2-0 | +161618 |
| 7modern | 456 | Do, Mimi (1538) | Won 2-0 | +171635 |
| 8modern | 295 | Odorizzi, Christopher (1709) | Lost 0-2 | -171618 |
| 9modern | 353 | Grugal, Michael (1585) | Lost 0-2 | -191599 |
| top | average opponent: 1618record: 5-4 | new rating: 1599 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1563 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 566 | Zug, John (1483) | Won 2-0 | +171580 |
| 2modern | 454 | Warner, Jack (1518) | Won 2-0 | +171597 |
| 3modern | 313 | Schultz, Nicholas (1536) | Lost 1-2 | -191578 |
| 4modern | 444 | Boyd, Adam (1869) | Won 2-1 | +231601 |
| 5modern | 501 | Struck, Michael (1515) | Won 2-0 | +161617 |
| 6modern | 310 | Finison, Kevin (1590) | Lost 1-2 | -181599 |
| 7modern | 493 | Cortez, Nicholas (1582) | Lost 1-2 | -191580 |
| 8modern | 516 | Webster, Aaron (1758) | Won 2-1 | +221602 |
| 9modern | 411 | Singleton, Chris (1450) | Lost 0-2 | -211581 |
| top | average opponent: 1589record: 5-4 | new rating: 1581 | ||
| Grand Prix Indianapolis 2012 (legacy) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 251 | Hupke, Casey R (1483) | Lost 0-2 | -191499 |
| 2legacy | 376 | Knaack, Aaron (1414) | Won 2-0 | +161515 |
| 3legacy | 401 | Rabey, Michael (1524) | Won 2-1 | +191534 |
| 4legacy | 369 | Black, Seth (1423) | Won 2-1 | +161550 |
| 5legacy | 269 | Lee, Hugo (1484) | Lost 0-2 | -201530 |
| 6legacy | 212 | Brewster, Megan (1464) | Won 2-0 | +171547 |
| 7legacy | 132 | Tompkins, Scott (1491) | Won 2-0 | +171564 |
| 8legacy | 131 | Newman, James (1586) | Won 2-0 | +191583 |
| 9legacy | 110 | Van Deelen, Mike (1509) | Lost 1-2 | -201563 |
| top | average opponent: 1486record: 6-3 | new rating: 1563 | ||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 506 | Dostine, Joshua (1500) | Won 2-1 | +181518 |
| 2legacy | 454 | Beall, David (1500) | Lost 0-2 | -181500 |
| 3legacy | 520 | Postlethwait, Tab (1500) | Lost 0-2 | -181482 |
| 4legacy | 657 | Donaugh, Spencer R (1484) | Won 2-0 | +181500 |
| 5legacy | 560 | Jupiter, Jermol (1505) | Won 2-1 | +181518 |
| 6legacy | 548 | Kantartzis, Constantine (1523) | Won 2-0 | +181536 |
| 7legacy | 498 | Wilson, Roberto (1522) | Lost 0-2 | -181518 |
| top | average opponent: 1505record: 4-3 | new rating: 1518 | ||