Koschak, Robert
Current rating: 1567
Record: 6-3
| Grand Prix Kansas City 1999 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 36 | Paschover, Marc (1521) | Lost 0-0 | -181482 |
| 5extended | 66 | Villere, Darcy (1500) | Won 0-0 | +191501 |
| 6extended | 40 | Haury, Sonny (1537) | Won 0-0 | +181519 |
| 7extended | 28 | Wollpert, Worth (1697) | Won 0-0 | +221541 |
| 8extended | 14 | McMahon, Chris (1570) | Won 0-0 | +181559 |
| 9extended | 3 | Paschover, Marc (1585) | Won 0-0 | +191578 |
| 10extended | 2 | Ho, Lan (1665) | Lost 0-0 | -171561 |
| 11extended | 11 | Sullivan, Adrian (1574) | Won 0-0 | +181579 |
| 12extended | 5 | Buehler, Randy (1872) | Lost 0-0 | -121567 |
| average opponent: 1613record: 6-3 | new rating: 1567 | |||