Chakka, David
Current rating: 1458
Record: 3-6
| Grand Prix Los Angeles 2018 (M19 standard) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 138 | Upton, Henry (1464) | Lost 0-2 | -191494 |
| 2standard | 298 | Hickey, Mark (1482) | Lost 0-2 | -181476 |
| 3standard | 473 | Springer, Alac (1474) | Lost 0-2 | -181458 |
| average opponent: 1474record: 0-3 | new rating: 1458 | |||
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 317 | Contreras, Carlos (1600) | Won 2-0 | +201520 |
| 2sealed | 149 | Benson, Christine (1639) | Lost 0-2 | -161504 |
| 3sealed | 472 | Weeks, Kevin (1626) | Won 2-1 | +201524 |
| 4sealed | 339 | Tetlow, Adam (1648) | Lost 1-2 | -161508 |
| 5sealed | 494 | Bogdanov, Dennis (1681) | Won 2-0 | +221530 |
| 6sealed | 330 | Castorini, Victor (1606) | Lost 1-2 | -171513 |
| average opponent: 1633record: 3-3 | new rating: 1513 | |||