Virostko, Michael
Current rating: 1447
Record: 4-7
| Grand Prix Chicago 2014 (JOU standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 728 | Kramer, Josh (1500) | Lost 1-2 | -181463 |
| 2standard | 815 | Eaton, Matt (1482) | Won 2-0 | +181481 |
| 3standard | 733 | Conn, Alexander (1561) | Won 2-0 | +201501 |
| 4standard | 632 | Demoully, Zach (1517) | Lost 1-2 | -181483 |
| 5standard | 884 | Bluestein, Aaron B (1480) | Lost 0-2 | -181465 |
| 6standard | 748 | DuPont, Paul (1481) | Lost 1-2 | -181447 |
| average opponent: 1504record: 2-4 | new rating: 1447 | |||
| Grand Prix Orlando 2012 (ISD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 35 | Arndt, Melanie (1463) | Won 2-0 | +171517 |
| 2standard | 219 | Jones, Timothy (1502) | Won 2-1 | +181535 |
| 3standard | 52 | Fitchko, William (1597) | Lost 0-2 | -171518 |
| 4standard | 290 | Sesit, Brad (1484) | Lost 0-2 | -181500 |
| 5standard | 265 | Lauer, Steven (1449) | Lost 1-2 | -191481 |
| average opponent: 1499record: 2-3 | new rating: 1481 | |||