Hostak, Isaac
Current rating: 1487
Record: 4-5-1
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 264 | Schwartz, Alexander (1573) | Won 2-0 | +201502 |
| 2sealed | 28 | Falkenrath, Chris (1534) | Lost 1-2 | -181484 |
| 3sealed | 266 | Peterson, Kyle (1493) | Won 2-1 | +181502 |
| 4sealed | 177 | Pham, John (1472) | Won 2-0 | +181520 |
| 5sealed | 84 | Berry, Mike (1548) | Lost 0-2 | -181502 |
| 6sealed | 215 | Christensson, Thommy (1661) | Lost 0-2 | -151487 |
| average opponent: 1547record: 3-3 | new rating: 1487 | |||
| Grand Prix Albuquerque 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 125 | Blan, Tisha (1500) | Won 2-0 | +181518 |
| 2standard | 115 | Timmler, Kye (1541) | Lost 1-2 | -181500 |
| 3standard | 294 | Lee, Nolan V (1482) | Draw 1-1 | 01500 |
| 4standard | 383 | Barraza, Florentino (1500) | Lost 1-2 | -181482 |
| average opponent: 1506record: 1-2-1 | new rating: 1482 | |||