Kantartzis, Constantine
Current rating: 1458
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 291 | Lopez, Andres 2 (1500) | Won 2-0 | +181475 |
| 2sealed | 94 | Fleisher, Zachary (1500) | Lost 0-2 | -171458 |
| top | average opponent: 1500record: 1-1 | new rating: 1458 | ||
| Grand Prix Cleveland 2015 (FRF limited) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 538 | Dasher, Ethan (1523) | Won 2-1 | +191471 |
| 2sealed | 77 | Hill, James (1240) | Won 2-0 | +141485 |
| 3sealed | 374 | Whitaker, Matthew (1537) | Won 2-1 | +191504 |
| 4sealed | 428 | Jaramillo, Blaven (1465) | Lost 0-2 | -191485 |
| 5sealed | 220 | Phillips, Cedric (1862) | Lost 0-2 | -111474 |
| 6sealed | 403 | Crane, Ward (1520) | Lost 0-2 | -171457 |
| top | average opponent: 1524record: 3-3 | new rating: 1457 | ||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 410 | Kunze, David (1500) | Won 2-0 | +181518 |
| 2legacy | 559 | Moreno, William (1674) | Won 2-1 | +211539 |
| 3legacy | 405 | Hawkins, Eric (1621) | Won 2-0 | +191558 |
| 4legacy | 450 | Levin, Drew (1586) | Lost 0-2 | -171541 |
| 5legacy | 518 | Adams, Ken (1559) | Lost 0-2 | -181523 |
| 6legacy | 548 | Mellem, David (1518) | Lost 0-2 | -181505 |
| 7legacy | 543 | Shumaker, Jason B (1500) | Lost 0-2 | -181487 |
| 8legacy | 515 | Hartzler, Adam B (1525) | Lost 1-2 | -171470 |
| 9legacy | 493 | Fox, Terry L (1483) | Lost 0-2 | -181452 |
| top | average opponent: 1552record: 3-6 | new rating: 1452 | ||