Roop, David
Current rating: 1439
| Grand Prix Richmond 2014 (modern) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1057 | Jebbett, Aaron (1500) | Lost 0-2 | -171414 |
| 2modern | 1587 | Schimp, Caleb (1452) | Lost 1-2 | -171397 |
| 3modern | 1656 | Shaffer, Sarah (1463) | Won 2-0 | +191416 |
| 4modern | 1451 | Warring, Marcus (1482) | Won 2-0 | +191435 |
| 5modern | 1420 | McCarty, Heath (1559) | Won 2-1 | +201455 |
| 6modern | 1375 | Bowman, Jeremy (1541) | Lost 0-2 | -161439 |
| top | average opponent: 1500record: 3-3 | new rating: 1439 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 90 | Brewer, Josh (1482) | Lost 1-2 | -181428 |
| 2standard | 457 | Harris, Jason (1481) | Draw 1-1 | +11429 |
| 3standard | 600 | Lee, Jason (1447) | Won 2-1 | +191448 |
| 4standard | 532 | Williams, David G (1498) | Lost 0-2 | -171431 |
| top | average opponent: 1477record: 1-2-1 | new rating: 1431 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 841 | Villamizar, Daniel (1480) | Lost 0-2 | -181482 |
| 2standard | 964 | Smith, Eric J (1482) | Lost 0-2 | -181464 |
| 3standard | 1000 | Wood, Joseph (1464) | Lost 1-2 | -181446 |
| 4standard | 1035 | Rodermund, John (1445) | Lost 0-2 | -181428 |
| 5standard | 984 | Hafey, Ronald (1427) | Won 2-1 | +181446 |
| 6standard | 914 | Gonzalez, Brandon (1449) | Won 2-1 | +181464 |
| 7standard | 834 | Spellman, Mark (1464) | Lost 0-2 | -181446 |
| top | average opponent: 1459record: 2-5 | new rating: 1446 | ||