Clark, Derrick
Current rating: 1429
Record: 3-7
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 493 | Provencher, Danny (1500) | Won 2-0 | +201447 |
| 2modern | 8 | Kim, Abraham (1467) | Lost 1-2 | -181429 |
| average opponent: 1483record: 1-1 | new rating: 1429 | |||
| Grand Prix Phoenix 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 108 | Internicola, Eric (1412) | Lost 0-2 | -201480 |
| 2modern | 474 | Conway, Mark (1465) | Lost 0-2 | -181462 |
| 3modern | 575 | Alcantara, Charles (1417) | Lost 0-2 | -191443 |
| 4modern | 614 | Muldoon, Jesse (1317) | Won 2-0 | +161459 |
| 5modern | 556 | Small, Eli (1602) | Lost 0-2 | -151444 |
| 6modern | 505 | Small, Matthew (1542) | Lost 0-2 | -171427 |
| 7modern | 420 | Snider, Harry (1426) | Won 2-0 | +181445 |
| 8modern | 352 | Cronister, Richard (1447) | Lost 1-2 | -181427 |
| average opponent: 1454record: 2-6 | new rating: 1427 | |||