Cooc, Derrick
Current rating: 1433
Record: 2-6
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1193 | Castilla, Nina (1500) | Lost 1-2 | -171462 |
| 2modern | 1208 | Romney, Fernando (1464) | Lost 0-2 | -181444 |
| 3modern | 1228 | Sacher, AJ (1824) | Lost 1-2 | -111433 |
| average opponent: 1596record: 0-3 | new rating: 1433 | |||
| Grand Prix Oakland 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 267 | Vicars, Trevor (1463) | Lost 0-2 | -191481 |
| 2modern | 414 | Sun, John (1486) | Won 2-1 | +181499 |
| 3modern | 420 | Custodio, Anthony (1177) | Won 2-0 | +131512 |
| 4modern | 229 | Mecklenburg, Eric (1526) | Lost 0-2 | -181494 |
| 5modern | 423 | Christopher, Michael (1687) | Lost 0-2 | -151479 |
| average opponent: 1468record: 2-3 | new rating: 1479 | |||