Cejka, Zachary
Current rating: 1394
| Grand Prix Phoenix 2020 (pioneer) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 233 | Dienstbier, Eric (1594) | Lost 1-2 | -151444 |
| 2pioneer | 326 | Chavez, Rafael (1534) | Lost 1-2 | -171427 |
| 3pioneer | 416 | Birchard, Tyler (1466) | Lost 0-2 | -171410 |
| 4pioneer | 436 | Wimpenny, Edward (1499) | Lost 1-2 | -161394 |
| top | average opponent: 1523record: 0-4 | new rating: 1394 | ||
| Grand Prix Phoenix 2019 (ELD limited) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 111 | Freeman, Quinn (1482) | Lost 0-2 | -171432 |
| 2sealed | 153 | Halftermeyer, Roger (1488) | Lost 0-2 | -171415 |
| 3sealed | 249 | Kassari, John (1802) | Won 2-0 | +241439 |
| 4sealed | 239 | Riche, Mason (1271) | Won 2-1 | +151454 |
| 5sealed | 189 | Higley, Jeremy (1496) | Won 2-1 | +191473 |
| 6sealed | 157 | Goslar, Matthew (1706) | Lost 1-2 | -141459 |
| top | average opponent: 1541record: 3-3 | new rating: 1459 | ||
| Grand Prix Denver 2019 (M20 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 175 | Jahnke, John (1465) | Won 2-1 | +171517 |
| 2standard | 150 | Tams, Jason (1523) | Lost 0-2 | -181499 |
| 3standard | 174 | Coonan, Ryan (1407) | Lost 0-2 | -191480 |
| 4standard | 220 | Saulnier, Jordan (1488) | Lost 0-2 | -181462 |
| 5standard | 257 | Eng, Edwin (1751) | Lost 0-2 | -131449 |
| top | average opponent: 1527record: 1-4 | new rating: 1449 | ||