Ostrom, John
Current rating: 1428
Record: 2-6
| Grand Prix Salt Lake City 2012 (DKA standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 94 | Trentini, James F (1500) | Lost 0-2 | -171464 |
| 2standard | 329 | Santos, Benedict (1481) | Lost 1-2 | -181446 |
| 3standard | 489 | Dilley, George (1464) | Lost 0-2 | -181428 |
| average opponent: 1482record: 0-3 | new rating: 1428 | |||
| Grand Prix Denver 2011 (MBS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 66 | Garcia, Kevin (1505) | Lost 0-2 | -181482 |
| 2sealed | 142 | Randol, Mark (1463) | Won 2-0 | +181500 |
| 3sealed | 129 | Frost, Tyler (1500) | Won 2-1 | +181518 |
| 4sealed | 124 | Long, Barron (1484) | Lost 0-2 | -191499 |
| 5sealed | 97 | Nassau, Andy H (1502) | Lost 0-2 | -181481 |
| average opponent: 1491record: 2-3 | new rating: 1481 | |||