Mikes, Jan
Current rating: 1436
Record: 11-15-1
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 164 | Stefankova, Jaroslava (1500) | Won 2-0 | +191448 |
| 2sealed | 105 | Fatka, David (1518) | Draw 1-1 | +21450 |
| 3sealed | 131 | Krauland, Thomas (1432) | Lost 1-2 | -191431 |
| 4sealed | 246 | Miller, Jan (1561) | Lost 0-2 | -151416 |
| 5sealed | 284 | Exler, Lukas (1430) | Won 2-1 | +181434 |
| 6sealed | 225 | Ress, Florian (1479) | Won 2-0 | +191453 |
| 7sealed | 166 | Sindelar, Petr (1516) | Lost 1-2 | -171436 |
| 8sealed | 153 | Magerl, David (1384) | Won 2-0 | +171453 |
| 9sealed | 104 | Rac, Robert (1519) | Lost 0-2 | -171436 |
| top | average opponent: 1482record: 4-4-1 | new rating: 1436 | ||
| Grand Prix Vienna 2004 (COK limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 292 | Pratnemer, Benjamin (1494) | Won 2-1 | +181519 |
| 2sealed | 127 | Slama Saad, Michele (1626) | Lost 0-2 | -161503 |
| 3sealed | 235 | Iliadis, Stavros (1500) | Lost 1-2 | -181485 |
| 4sealed | 416 | Hammerschmid, Benjamin (1483) | Lost 0-2 | -181467 |
| 5sealed | 384 | Stanic, Bojan (1447) | Lost 1-2 | -191448 |
| 6sealed | 369 | Vidic, Andreas (1370) | Lost 0-2 | -191429 |
| top | average opponent: 1487record: 1-5 | new rating: 1429 | ||
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 337 | Szafranski, Karol (1461) | Won 2-0 | +181500 |
| 2sealed | 164 | Findejs, Jan (1487) | Won 2-1 | +181518 |
| 3sealed | 12 | Spacek, Pavel (1572) | Lost 0-2 | -171501 |
| 4sealed | 257 | Baroch, Petr (1519) | Lost 1-2 | -181483 |
| 5sealed | 223 | Kasinski, Tomas (1486) | Won 2-0 | +181501 |
| top | average opponent: 1505record: 3-2 | new rating: 1501 | ||
| Grand Prix Prague 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 127 | Danter, Gearoid (1500) | Won 2-1 | +181518 |
| 2sealed | 36 | Zielinski, Lukasz (1518) | Won 2-1 | +181536 |
| 3sealed | 62 | Brodzak, Jan (1576) | Lost 1-2 | -171519 |
| 4sealed | 76 | Sedenla, Jaroslav (1518) | Lost 0-2 | -181501 |
| 5sealed | 205 | Strzelecki, Adam (1485) | Lost 0-2 | -191482 |
| 6sealed | 223 | Roman, Pilisek (1481) | Won 2-1 | +181500 |
| 7sealed | 163 | Balars, Vasady (1500) | Lost 0-2 | -181482 |
| top | average opponent: 1511record: 3-4 | new rating: 1482 | ||