Gruszecki, Piotr
Current rating: 1482
Record: 6-7
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 680 | Hallwirth, Stephan (1494) | Won 2-0 | +171555 |
| 2sealed | 506 | Padulazzi, Massimiliano (1501) | Lost 0-2 | -191536 |
| 3sealed | 743 | Minghetti, Riccardo (1591) | Lost 0-2 | -171519 |
| 4sealed | 802 | Golob, Gasper (1464) | Lost 1-2 | -191500 |
| 5sealed | 805 | Ciprovsky, Tomas (1481) | Lost 1-2 | -181482 |
| average opponent: 1506record: 1-4 | new rating: 1482 | |||
| Grand Prix Krakow 2007 (LRW standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 525 | Nowowiejski, Tomasz (1500) | Won 2-1 | +181518 |
| 2standard | 589 | Danilkevicius, Aivaras (1512) | Won 2-1 | +181536 |
| 3standard | 546 | Lange, Jan (1520) | Lost 1-2 | -181518 |
| 4standard | 609 | Driessen, Thomas (1540) | Won 2-1 | +181536 |
| 5standard | 582 | Sadlon, Vladimir (1536) | Lost 0-2 | -181518 |
| 6standard | 576 | Tajstra, Arnold (1519) | Won 2-0 | +181536 |
| 7standard | 563 | Melichar, Martin (1674) | Lost 0-2 | -151521 |
| 8standard | 601 | Bures, Ondrej (1503) | Won 2-0 | +171538 |
| average opponent: 1538record: 5-3 | new rating: 1538 | |||