Jirek, Martin
Current rating: 1404
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 174 | Adami, Michael (1584) | Lost 1-2 | -161437 |
| 2sealed | 192 | Illich, Tomas (1482) | Lost 1-2 | -171420 |
| 3sealed | 267 | Helbik, Marek (1460) | Won 2-0 | +191439 |
| 4sealed | 244 | Pokorny, Lukas (1479) | Lost 1-2 | -181421 |
| 5sealed | 246 | Duda, Michal (1428) | Lost 0-2 | -171404 |
| top | average opponent: 1487record: 1-4 | new rating: 1404 | ||
| Grand Prix Dortmund 2006 (GPT limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 12 | Schaffranietz, Ervin (1516) | Draw 1-1 | +11484 |
| 2sealed | 129 | Nowak, Ralph-michael (1498) | Lost 1-2 | -181466 |
| 3sealed | 184 | Brinks, Eric (1406) | Won 2-0 | +171483 |
| 4sealed | 145 | Mokrusch, Falko (1527) | Won 2-1 | +191502 |
| 5sealed | 100 | Braun, Oliver (1602) | Lost 0-2 | -161486 |
| 6sealed | 139 | Schwede, Hanno (1487) | Lost 0-2 | -181468 |
| 7sealed | 140 | Szegho, Dalibor (1633) | Lost 1-2 | -151453 |
| top | average opponent: 1524record: 2-4-1 | new rating: 1453 | ||
| Grand Prix Leipzig 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 7 | Habraken, Niels (1500) | Lost 0-2 | -181482 |
| 2sealed | 190 | Ruth, Melvin (1399) | Won 2-0 | +161498 |
| 3sealed | 156 | Pedersen, Soren (1536) | Lost 0-2 | -171481 |
| 4sealed | 163 | Kircher, Sebastian (1481) | Lost 1-2 | -181463 |
| 5sealed | 179 | Freitag, Stefan (1466) | Won 2-0 | +181481 |
| 6sealed | 149 | Benda, Pavel (1481) | Won 2-0 | +181499 |
| 7sealed | 107 | Muller, Flavio (1514) | Lost 0-2 | -181481 |
| 8sealed | 106 | Collinet, Patrick (1589) | Lost 0-2 | -161465 |
| 9sealed | 110 | Tchernomazov, Ilja (1463) | Won 2-0 | +181483 |
| top | average opponent: 1492record: 4-5 | new rating: 1483 | ||