Morrison, David [USA]
Current rating: 1525
Record: 17-18
| Grand Prix Detroit 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 678 | Wiper, Charles (1592) | Lost 0-2 | -171483 |
| 2modern | 654 | Snyder, Drew (1493) | Lost 1-2 | -171466 |
| 3modern | 1047 | Husnick, Brian (1449) | Lost 0-2 | -191447 |
| 4modern | 1214 | Brown, Jordan (1345) | Won 2-0 | +161463 |
| 5modern | 992 | Malloy, Coonor (1486) | Won 2-1 | +191482 |
| 6modern | 842 | Weber, Ethan (1461) | Won 2-0 | +171499 |
| 7modern | 558 | Homberg, Bryan (1499) | Won 2-0 | +181517 |
| 8modern | 480 | Siow, Lucas (1985) | Won 2-1 | +261543 |
| 9modern | 492 | Buckingham, Dustin (1501) | Lost 1-2 | -181525 |
| top | average opponent: 1534record: 5-4 | new rating: 1525 | ||
| Grand Prix Nashville 2012 (DKA limited) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 37 | Lee, Robert (1534) | Lost 0-2 | -171479 |
| 3sealed | 273 | White, Chad (1482) | Won 2-0 | +181497 |
| 4sealed | 272 | Cole, Thomas R (1505) | Won 2-0 | +181515 |
| 5sealed | 145 | Dobbins, James S (1558) | Won 2-1 | +191534 |
| 6sealed | 119 | Fulk, David (1496) | Lost 0-2 | -191515 |
| 7sealed | 193 | Hu, Haibing (1735) | Won 2-1 | +221537 |
| 8sealed | 171 | Searles, James (1492) | Lost 0-2 | -191518 |
| 9sealed | 164 | John C., (1494) | Lost 0-2 | -181500 |
| top | average opponent: 1537record: 4-4 | new rating: 1500 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 487 | Howe, Joshua (1633) | Lost 0-2 | -151468 |
| 5extended | 492 | Ryan, Forrest (1613) | Won 2-0 | +211489 |
| 6extended | 461 | Muir, Jeremy (1647) | Lost 1-2 | -151474 |
| 7extended | 518 | Martin, Steven L (1522) | Won 2-1 | +181492 |
| 8extended | 466 | Mason, Eric (1588) | Won 2-0 | +201512 |
| 9extended | 490 | Chafe, Nathaniel (1612) | Lost 1-2 | -161496 |
| top | average opponent: 1602record: 3-3 | new rating: 1496 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 484 | Holland, Joe (1536) | Won 2-1 | +191519 |
| 5sealed | 425 | Hager, Jason (1582) | Won 2-0 | +191538 |
| 6sealed | 411 | Conard, Brad (1490) | Won 2-0 | +171555 |
| 7sealed | 402 | Pham, Ryan (1670) | Won 2-0 | +201575 |
| 8sealed | 401 | Price, Pat (1729) | Lost 0-2 | -151560 |
| 9sealed | 417 | Buchanan, Samuel (1714) | Lost 0-2 | -151545 |
| 10sealed | 439 | Reeves, Brian (1546) | Lost 0-2 | -181527 |
| 11draft | 85 | Boozer, Chris (1655) | Lost 0-2 | -161511 |
| 12draft | 16 | Holland, Kitt (1626) | Lost 0-2 | -161495 |
| 13draft | 78 | Waymon, Larry (1468) | Won 2-0 | +181513 |
| 14draft | 66 | Martell, Tom (1898) | Lost 0-0 | -121501 |
| 15draft | 7 | Forsythe, Jimmy (1510) | Lost 0-2 | -181483 |
| top | average opponent: 1619record: 5-7 | new rating: 1483 | ||