Petrash, Chris
Current rating: 1501
Record: 4-4-1
| Grand Prix Memphis 1999 (Urza's block) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 60 | Hill, Zac (1500) | Won 0-0 | +181500 |
| 2block | 85 | Spradley, Stephen (1518) | Lost 0-0 | -171483 |
| 3block | 105 | Hill, Jeffrey (1482) | Lost 0-0 | -181465 |
| 4block | 138 | Kimball, Ted (1482) | Won 0-0 | +181483 |
| 5block | 108 | Lyons, Bryan (1500) | Won 0-0 | +181501 |
| 6block | 78 | Maun, Bryan (1501) | Won 0-0 | +181519 |
| 7block | 66 | Pierce, Brian (1522) | Lost 0-0 | -181501 |
| average opponent: 1501record: 4-3 | new rating: 1501 | |||
| Grand Prix Kansas City 1999 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 136 | Crauer, R. Brad (1500) | Lost 0-0 | -181482 |
| 5extended | 124 | Bobbitt, Clayton (1482) | Draw 0-0 | 01482 |
| average opponent: 1491record: 0-1-1 | new rating: 1482 | |||