Mazierski, Igor
Current rating: 1497
Record: 5-6 (GP) / 9-9-3 (professional)
| Grand Prix London 2002 (Odyssey block) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 73 | Dusek, Daniel (1429) | Lost 1-2 | -191494 |
| 3block | 191 | Misonne, Jacques (1596) | Won 2-1 | +191513 |
| 4block | 102 | Claessen, Tim (1473) | Won 2-1 | +181531 |
| 5block | 87 | Dragstra, Mark (1534) | Lost 1-2 | -181513 |
| 6block | 165 | Genders, Bart (1639) | Lost 0-2 | -161497 |
| top | average opponent: 1534record: 2-3 | new rating: 1497 | ||
| Grand Prix Prague 2001 (PLS limited) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 49 | Janecek, Michal (1518) | Won 2-0 | +181532 |
| 3sealed | 3 | Jaki, Thomas (1506) | Lost 0-2 | -191513 |
| 4sealed | 158 | Borcevsky, Pavel (1500) | Won 2-0 | +181531 |
| 5sealed | 47 | Lamper, Jan (1490) | Lost 0-2 | -191512 |
| 6sealed | 106 | Hajek, Piotr (1553) | Won 2-0 | +191531 |
| 7sealed | 76 | Klaudy, Jiri (1536) | Lost 0-2 | -181513 |
| top | average opponent: 1517record: 3-3 | new rating: 1513 | ||
| 2000 World Championship (mixed) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 22 | Forsythe, Aaron (1562) | Won 2-1 | +191540 |
| 2standard | 23 | Moungey, Jason (1491) | Lost 1-2 | -191521 |
| 3standard | 72 | Brown, Stephen [WAL] (1520) | Lost 0-2 | -181503 |
| 4standard | 108 | Guevin, Thomas (1617) | Lost 1-2 | -161487 |
| 5standard | 110 | Cooper, Marcus (1369) | Won 2-1 | +161503 |
| 6standard | 94 | Vienneau, Matthew (1623) | Lost 0-2 | -161487 |
| 7draft | 46 | Luncumilla, Mario (1506) | Won 1-0 | +181505 |
| 8draft | 95 | Oman, Jimmy (1688) | Lost 0-2 | -141491 |
| 9draft | 31 | Cetl, Erwin (1440) | Lost 0-2 | -191472 |
| 10draft | 86 | Snepvangers, Bram (1524) | Lost 0-2 | -171455 |
| 11draft | 5 | Ekebom, Erno (1692) | Draw 1-1 | +41459 |
| 12draft | 112 | Smrek, Juraj (1500) | Lost 0-2 | -171442 |
| 13block | 127 | Veiga, Fernando (1405) | Won 2-0 | +171459 |
| 14block | 118 | Biasotti, Franco (1466) | Draw 1-1 | 01459 |
| 15block | 119 | Lee, Suk-Ju (1447) | Won 2-0 | +181477 |
| 16block | 108 | Jurkovic, Robert (1540) | Won 2-1 | +191496 |
| 17block | 96 | Dols, Roel (1455) | Won 2-0 | +171513 |
| 18block | 85 | Chan, Tiago (1536) | Draw 1-1 | +11514 |
| top | average opponent: 1521record: 7-8-3 | new rating: 1514 | ||
| 2000 European Championship (mixed) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 104 | Van Lissum, Evan (1564) | Won 2-1 | +191519 |
| 2draft | 32 | Gulyas, Daniel (1503) | Won 1-0 | +181537 |
| 3draft | 6 | Ronaldson, Ben (1656) | Lost 0-2 | -161521 |
| top | average opponent: 1574record: 2-1 | new rating: 1521 | ||