Jastrzab, Michal
Current rating: 1455
Record: 7-10-1
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 623 | Vavra, Jan (1402) | Won 2-0 | +161482 |
| 2sealed | 690 | Brandt, Sebastian (1435) | Lost 0-2 | -181464 |
| 3sealed | 651 | Salamon, Michal (1676) | Won 2-1 | +211485 |
| 4sealed | 621 | Ziegelheim, Jan (1521) | Lost 0-2 | -171468 |
| 5sealed | 704 | Brandt, Felix (1502) | Lost 0-2 | -171451 |
| 6sealed | 775 | Slefr, Jiri (1482) | Won 2-1 | +181469 |
| 7sealed | 706 | Kungurow, Siegfried (1486) | Lost 0-2 | -171452 |
| 8sealed | 674 | Fukala, Dalibor (1594) | Lost 0-2 | -161436 |
| 9sealed | 652 | Ebner, Florian (1479) | Won 2-0 | +191455 |
| average opponent: 1509record: 4-5 | new rating: 1455 | |||
| Grand Prix Krakow 2007 (LRW standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 79 | Baltutis, Valdas (1500) | Lost 1-2 | -181482 |
| 2standard | 139 | Magica, Reina (1425) | Won 2-1 | +171499 |
| 3standard | 105 | Maziarz, Mateusz (1500) | Won 2-1 | +181517 |
| 4standard | 89 | Stolte, Jakob (1457) | Lost 0-2 | -191498 |
| 5standard | 107 | Brozek, Petr (1616) | Lost 0-2 | -161482 |
| 6standard | 164 | Szymula, Robert (1483) | Lost 0-2 | -181464 |
| 7standard | 146 | Klemm, Matthis (1513) | Lost 0-2 | -171447 |
| 8standard | 138 | Knap, Cezary (1481) | Draw 1-1 | +11448 |
| 9standard | 119 | Pyzio, Radoslaw (1449) | Won 2-0 | +181466 |
| average opponent: 1492record: 3-5-1 | new rating: 1466 | |||