Grutkowski, Karol
Current rating: 1527
Record: 5-4
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 415 | Radloff, Tobias (1696) | Lost 0-2 | -141486 |
| 2standard | 429 | Kecke, Paul (1481) | Lost 1-2 | -191467 |
| 3standard | 663 | Novak, Luka (1520) | Won 2-1 | +191486 |
| 4standard | 636 | Pohlmann, Susanne (1458) | Won 2-1 | +181504 |
| 5standard | 520 | Gullotta, Davide Giuseppe (1366) | Won 2-0 | +151519 |
| 6standard | 284 | Rennie, David (1474) | Won 2-0 | +181537 |
| 7standard | 279 | Zeggio, Riccardo (1575) | Won 2-1 | +181555 |
| 8standard | 113 | Janda, Kristian (1740) | Lost 1-2 | -141541 |
| 9standard | 156 | De Sanctis, Pietro (1767) | Lost 0-2 | -141527 |
| average opponent: 1564record: 5-4 | new rating: 1527 | |||