Perko, Carl
Current rating: 1539
Record: 5-3
| Grand Prix Los Angeles 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 324 | Neiman, Luis (1631) | Lost 0-2 | -161484 |
| 2modern | 531 | Routzahn, Aaron (1480) | Won 2-1 | +181502 |
| 3modern | 501 | Sturgis, Kirk (1521) | Lost 1-2 | -171485 |
| 4modern | 700 | Reddick, Roman (1436) | Won 2-1 | +171502 |
| 5modern | 360 | Loza, Jeremy (1510) | Won 2-1 | +181520 |
| 6modern | 310 | McLaughlin, Lindsey (1483) | Lost 1-2 | -191501 |
| 7modern | 383 | Fogelstrom, Matthew (1617) | Won 2-0 | +201521 |
| 8modern | 291 | Cuello, Luis (1495) | Won 2-1 | +181539 |
| average opponent: 1522record: 5-3 | new rating: 1539 | |||