Dissanayake, David
Current rating: 1460
| Grand Prix Oakland 2019 (modern) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 253 | Martin, Jeremy (1466) | Won 2-0 | +181513 |
| 2modern | 39 | Rowan, Richard (1604) | Lost 0-2 | -171496 |
| 3modern | 288 | Syu, Darren (1500) | Lost 0-2 | -181478 |
| 4modern | 384 | Van Note, Tyler (1485) | Lost 1-2 | -181460 |
| top | average opponent: 1514record: 1-3 | new rating: 1460 | ||
| Grand Prix Seattle 2018 (standard) (RIX standard) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 63 | Peterson, Paul (1613) | Won 2-1 | +211505 |
| 2standard | 90 | Cracraft, Justen (1537) | Won 2-0 | +181523 |
| 3standard | 33 | Rocha, Sergio (1574) | Lost 0-2 | -171506 |
| 4standard | 293 | Ellis, Jarrod (1667) | Won 2-1 | +211527 |
| 5standard | 261 | Sulak, Andrew (1551) | Lost 0-2 | -181509 |
| 6standard | 222 | Hallahan, Kory (1708) | Lost 0-2 | -141495 |
| top | average opponent: 1608record: 3-3 | new rating: 1495 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 202 | David, Ramon Paolo (1486) | Lost 0-2 | -181482 |
| 2standard | 461 | Chrisman, Josiah (1576) | Lost 1-2 | -171465 |
| 3standard | 728 | Galloway, Scotland (1462) | Won 2-0 | +181483 |
| 5standard | 444 | Wang, Kevin (1579) | Won 2-1 | +201503 |
| 6standard | 345 | Castorini, Victor (1467) | Lost 0-2 | -181485 |
| 7standard | 427 | Wirth, Ron (1472) | Draw 1-1 | -11484 |
| top | average opponent: 1507record: 2-3-1 | new rating: 1484 | ||