Mazanec, Roman
Current rating: 1401
Record: 16-22
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 538 | Danek, Jirka (1402) | Lost 0-2 | -181416 |
| 2sealed | 742 | Majercik, Milan (1482) | Lost 0-2 | -171399 |
| 3sealed | 753 | Dio, Mikulas (1463) | Lost 1-2 | -171382 |
| 4sealed | 776 | Korosi, Daniel (1446) | Won 2-1 | +191401 |
| top | average opponent: 1448record: 1-3 | new rating: 1401 | ||
| Grand Prix Heidelberg 2002 (TOR limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 48 | Rall, Oliver (1500) | Lost 1-2 | -181449 |
| 2sealed | 313 | Langer, Kim (1482) | Won 2-0 | +191468 |
| 3sealed | 283 | Martin, Julien (1447) | Lost 0-2 | -191449 |
| 4sealed | 276 | Pick, Tobias (1484) | Lost 1-2 | -171432 |
| 5sealed | 306 | Neugebauer, Thomas (1462) | Won 2-0 | +191451 |
| 6sealed | 227 | Kremser, Erich (1482) | Lost 0-2 | -181433 |
| 7sealed | 203 | Klings, Rudiger (1465) | Lost 1-2 | -171416 |
| 8sealed | 168 | Gehring, Peter (1447) | Won 2-0 | +181434 |
| top | average opponent: 1471record: 3-5 | new rating: 1434 | ||
| Grand Prix Warsaw 2001 (Invasion block) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 64 | Apollo, Kristoffer (1507) | Won 2-1 | +181520 |
| 2block | 42 | Mroz, Mateusz (1561) | Lost 1-2 | -171503 |
| 3block | 109 | Dziarmaga, Mariusz (1500) | Won 2-1 | +171520 |
| 4block | 62 | Domaszewski, Krzysztof (1528) | Lost 0-2 | -171503 |
| 5block | 123 | Svoboda, Cenek (1544) | Won 2-1 | +181521 |
| 6block | 84 | Borys, Grzegorz (1488) | Lost 1-2 | -181503 |
| 7block | 86 | Foltyn, Jan (1499) | Lost 0-2 | -181485 |
| 8block | 119 | Jazdrzyk, Michal (1482) | Lost 1-2 | -181467 |
| top | average opponent: 1513record: 3-5 | new rating: 1467 | ||
| Grand Prix Prague 2001 (PLS limited) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 7 | Jonsson, Robert (1500) | Won 2-0 | +181521 |
| 2sealed | 110 | Loos, Sebastian (1579) | Won 2-1 | +191540 |
| 3sealed | 30 | Steht, Lee (1514) | Lost 1-2 | -181522 |
| 4sealed | 137 | Lichniak, Marcin (1410) | Lost 0-2 | -201502 |
| top | average opponent: 1501record: 2-2 | new rating: 1502 | ||
| Grand Prix Amsterdam 2001 (INV limited) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 37 | Gariglio, Serge (1518) | Lost 1-2 | -191522 |
| 3sealed | 126 | Akritas, Pavlos (1500) | Won 2-1 | +181540 |
| 4sealed | 126 | Gerstel, Bjorn (1518) | Lost 0-2 | -181522 |
| 5sealed | 214 | Buttgereit, Dieter (1502) | Lost 1-2 | -191503 |
| top | average opponent: 1509record: 1-3 | new rating: 1503 | ||
| Grand Prix Vienna 1999 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 121 | Bruckel, Martin (1467) | Won 0-0 | +171517 |
| 2extended | 18 | Wang, Long (1518) | Won 0-0 | +181535 |
| 3extended | 21 | Parether, Sascha (1536) | Won 0-0 | +181553 |
| 4extended | 24 | Wollny, Gregor (1502) | Lost 0-0 | -191534 |
| 5extended | 52 | Gawrilowicz, Christian (1536) | Won 0-0 | +191553 |
| 6extended | 27 | Nubling, Marc (1554) | ID | 01553 |
| 7extended | 23 | Budde, Kai (1678) | Lost 0-0 | -161537 |
| 8extended | 31 | Ormerod, John (1556) | Won 0-0 | +181555 |
| 9extended | 20 | Seper, Martin (1552) | Won 0-0 | +181573 |
| 10extended | 14 | Kuhn, Janosch (1685) | Lost 0-0 | -161557 |
| 11extended | 22 | Debard, Michael (1650) | Lost 0-0 | -161541 |
| top | average opponent: 1567record: 6-4-1 | new rating: 1541 | ||