Ziegelheim, Jan
Current rating: 1472
Record: 18-20-1
| Grand Prix Barcelona 2016 (SOI limited) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 64 | Noguera, Sergi (1540) | Won 2-1 | +181514 |
| 4sealed | 203 | Costagli, Matteo (1581) | Lost 0-2 | -161498 |
| 5sealed | 406 | Campderros, Jaume (1532) | Lost 1-2 | -181480 |
| 6sealed | 611 | Pinto-Bello, Andres (1576) | Lost 0-2 | -161464 |
| 7sealed | 577 | RIERA, ISAAC (1505) | Won 2-0 | +191483 |
| 8sealed | 511 | Van Etten, Bart (1917) | Lost 1-2 | -111472 |
| top | average opponent: 1609record: 2-4 | new rating: 1472 | ||
| Grand Prix Vienna 2014 (BNG limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 50 | Novotny, Jiri (1500) | Won 2-1 | +181513 |
| 2sealed | 180 | Grill, Gerald (1464) | Won 2-1 | +181531 |
| 3sealed | 155 | Genz, Christian (1557) | Lost 0-2 | -181513 |
| 4sealed | 175 | Bezenek, Matthias (1572) | Won 2-1 | +191532 |
| 5sealed | 116 | Hittel, Matthias (1507) | Lost 0-2 | -181514 |
| 6sealed | 328 | Francik, Petr (1508) | Lost 1-2 | -181496 |
| top | average opponent: 1518record: 3-3 | new rating: 1496 | ||
| Grand Prix Prague 2013 (M14 limited) | starting rating: 1548 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 265 | Mostek, Sten-Magnus (1840) | Lost 0-2 | -131535 |
| 2sealed | 465 | Kuba, Daniel (1489) | Won 2-1 | +171552 |
| 3sealed | 373 | Paszke, Antek (1462) | Won 2-0 | +171569 |
| 4sealed | 377 | Stecher, Daniel (1571) | Lost 1-2 | -181551 |
| 5sealed | 368 | Ehmann, Christian (1580) | Lost 1-2 | -181533 |
| 6sealed | 550 | Marczak, Tomasz (1484) | Lost 1-2 | -191514 |
| 7sealed | 488 | Riha, Daniel (1464) | Lost 0-2 | -191495 |
| top | average opponent: 1556record: 2-5 | new rating: 1495 | ||
| Grand Prix Manchester 2012 (DKA limited) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 68 | Harle, Thomas (1585) | Lost 0-2 | -171535 |
| 2sealed | 162 | Chen, Wei (1483) | Won 2-0 | +171552 |
| 3sealed | 100 | Withers, Mark (1450) | Won 2-0 | +161568 |
| 4sealed | 132 | Wouters, Robin (1458) | Lost 1-2 | -201548 |
| top | average opponent: 1494record: 2-2 | new rating: 1548 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1558 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 574 | Kitali, Vincent (1500) | Lost 1-2 | -191539 |
| 2sealed | 719 | Bakhtiarov, Alexandre (1483) | Lost 0-2 | -191520 |
| 3sealed | 744 | Rylko, Martin (1465) | Draw 1-1 | -11519 |
| 4sealed | 769 | Kalamarz, Lukasz (1465) | Won 2-0 | +171536 |
| 5sealed | 719 | Musil, Tadeas (1433) | Won 2-0 | +161552 |
| 6sealed | 672 | Nolting, Florian (1514) | Won 2-0 | +171569 |
| 7sealed | 625 | Hauck, Christian (1610) | Lost 1-2 | -171552 |
| top | average opponent: 1496record: 3-3-1 | new rating: 1552 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 695 | Kazmierczak, Slawomir (1500) | Won 2-1 | +181518 |
| 2sealed | 590 | Jahoda, Jakub (1678) | Lost 1-2 | -151503 |
| 3sealed | 784 | Ronnkvist, Per (1531) | Won 2-0 | +181521 |
| 4sealed | 621 | Jastrzab, Michal (1485) | Won 2-0 | +181539 |
| 5sealed | 556 | Bosnic, Mitja (1577) | Lost 0-2 | -181521 |
| 6sealed | 685 | Armenteros Liebanas, Joaquin (1536) | Won 2-1 | +191540 |
| 7sealed | 580 | Zrelov, Maxim (1488) | Won 2-0 | +171557 |
| 8sealed | 596 | Rascato, Pier Paolo (1534) | Lost 0-2 | -191538 |
| 9sealed | 589 | Florent, Lucas (1625) | Won 2-0 | +201558 |
| top | average opponent: 1551record: 6-3 | new rating: 1558 | ||