Macosek, Jan
Current rating: 1640
| Grand Prix Prague 2013 (M14 limited) | starting rating: 1681 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 16 | Myslinski, Grzegorz (1522) | Lost 0-2 | -211660 |
| 4sealed | 235 | Heigerer, Stefan (1667) | Lost 0-2 | -181642 |
| 5sealed | 497 | Tavoda, Martin (1523) | Lost 1-2 | -201622 |
| 6sealed | 483 | Beck, Markus (1611) | Won 2-0 | +181640 |
| top | average opponent: 1581record: 1-3 | new rating: 1640 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1633 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 191 | Kaufmann, David (1562) | Won 2-1 | +161649 |
| 2sealed | 1 | Dauenhauer, Thomas (1306) | Won 2-1 | +121661 |
| 3sealed | 48 | Kollert, Michal (1536) | Won 2-0 | +161677 |
| 4sealed | 52 | Sele, Yves (1916) | Lost 0-2 | -141663 |
| 5sealed | 99 | Kwiatkowski, Maciej (1542) | Lost 1-2 | -201643 |
| 6sealed | 134 | Renaille, Gaetan (1569) | Won 2-1 | +171660 |
| 7sealed | 76 | Rosada, Adrian (1767) | Won 2-1 | +201680 |
| 8sealed | 65 | Bruckmeyer, Andreas (1608) | Won 2-1 | +171697 |
| 9sealed | 53 | De Coster, Jan (1844) | Lost 0-2 | -161681 |
| top | average opponent: 1628record: 6-3 | new rating: 1681 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 35 | Weinhold, Brendan C (1500) | Lost 0-2 | -181482 |
| 2sealed | 231 | Klaudy, Jiri (1518) | Won 2-1 | +191501 |
| 3sealed | 166 | Rybar, Stepan (1500) | Won 2-1 | +181519 |
| 4sealed | 183 | Kaman, Jiri (1518) | Won 2-0 | +181537 |
| 5sealed | 108 | Kornobis, Maciej (1536) | Won 2-0 | +181555 |
| 6sealed | 70 | Makarenko, Stas (1492) | Won 2-0 | +161571 |
| 7sealed | 39 | Melis, Bas (1581) | Lost 0-2 | -171554 |
| 8sealed | 74 | Chand, Vijay (1560) | Won 2-0 | +181572 |
| 9sealed | 68 | Panara, Bruno (1727) | Won 2-1 | +211593 |
| 10draft | 31 | Gruschevoi, Kirill (1593) | Lost 0-1 | -181575 |
| 11draft | 34 | Karlhuber-vockl, Peter (1528) | Draw 1-1 | -11574 |
| 13draft | 90 | Bachura, Miroslav (1570) | Won 2-1 | +181592 |
| 14draft | 31 | Zelezny, Jan (1606) | Won 2-0 | +181610 |
| 15draft | 32 | Black, Samuel (1881) | Won 2-0 | +231633 |
| top | average opponent: 1579record: 10-3-1 | new rating: 1633 | ||