Morrone, David
Current rating: 1394
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 565 | Anderson, Nathan (1743) | Lost 0-2 | -121420 |
| 2standard | 563 | Barnum, James (1594) | Lost 1-2 | -151405 |
| 3standard | 778 | McWryn, Emrys (1466) | Won 2-0 | +191424 |
| 4standard | 555 | Rutledge, Andy (1420) | Lost 1-2 | -181406 |
| 5standard | 671 | Piazza, Steven (1466) | Won 2-0 | +191425 |
| 6standard | 532 | Reyes, Gilbert (1535) | Won 2-0 | +201445 |
| 7standard | 521 | Casorso, Joshua (1542) | Lost 1-2 | -161429 |
| 8standard | 444 | Whitefield, Jonathan (1466) | Lost 0-2 | -181411 |
| 9standard | 394 | Christensen, Soren (1466) | Lost 0-2 | -171394 |
| top | average opponent: 1522record: 3-6 | new rating: 1394 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 156 | Baker, Nathan (1620) | Lost 0-2 | -151448 |
| 2standard | 566 | Simmons, Tyler (1481) | Won 2-1 | +191467 |
| 3standard | 441 | Bordwell, Christopher (1468) | Lost 1-2 | -181449 |
| 4standard | 731 | Flores, Jeremy (1465) | Won 2-0 | +181467 |
| 5standard | 548 | Leat, Atticus (1503) | Lost 1-2 | -171450 |
| 6standard | 575 | Sparks, Jesse (1481) | Lost 1-2 | -181432 |
| top | average opponent: 1503record: 2-4 | new rating: 1432 | ||
| Grand Prix Seattle 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 3 | LaPointe, Phillip (1451) | Lost 1-2 | -191481 |
| 2extended | 109 | Pham, Edward (1482) | Lost 1-2 | -181463 |
| 3extended | 159 | Jenkins, Jesse (1464) | Won 2-0 | +181481 |
| 4extended | 148 | Hague, Matt (1482) | Won 2-0 | +181499 |
| 5extended | 117 | Smith, Nick (1502) | Lost 1-2 | -181481 |
| 6extended | 139 | Baron, Corey (1482) | Lost 0-2 | -181463 |
| top | average opponent: 1477record: 2-4 | new rating: 1463 | ||