Pokorny, Jiri J
Current rating: 1551
| Grand Prix Prague 2017 (AER limited) | starting rating: 1577 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 439 | Bednarik, Richard (1585) | Lost 1-2 | -181559 |
| 2sealed | 574 | Withers, Edward (1489) | Lost 1-2 | -191540 |
| 3sealed | 899 | Innerlohinger, Florian (1463) | Lost 0-2 | -201520 |
| 4sealed | 918 | Hindle, James (1446) | Won 2-1 | +171537 |
| 5sealed | 809 | Kostelny, Pavel (1329) | Won 2-0 | +141551 |
| top | average opponent: 1463record: 2-3 | new rating: 1551 | ||
| Grand Prix Prague 2014 (modern) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 7 | Nevrkla, Pavel (1480) | Lost 0-2 | -181498 |
| 2modern | 467 | Roub, Jan (1482) | Won 2-0 | +171515 |
| 3modern | 497 | Riha, Jakub (1500) | Won 2-0 | +181533 |
| 4modern | 280 | Fantys, Daniel (1482) | Won 2-0 | +171550 |
| 5modern | 239 | Baron, Jake (1547) | Won 2-0 | +181568 |
| 6modern | 217 | Prinzell, Johan (1761) | Won 2-0 | +221590 |
| 7modern | 32 | Zatlkaj, Matej (1977) | Lost 1-2 | -121578 |
| 8modern | 144 | Kabalskiy, Roman (1524) | Won 2-0 | +171595 |
| 9modern | 133 | Venturi, Matteo (1560) | Lost 1-2 | -181577 |
| top | average opponent: 1590record: 6-3 | new rating: 1577 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 608 | Fremr, Marek (1500) | Won 2-0 | +181518 |
| 2sealed | 575 | Sephton, Nick J (1500) | Lost 0-2 | -181500 |
| 3sealed | 659 | Jandrasits, Marco (1500) | Lost 1-2 | -181482 |
| 4sealed | 785 | Florijn, Peter (1427) | Won 2-1 | +171499 |
| 5sealed | 739 | Kostal, Zdenek (1500) | Won 2-0 | +181517 |
| 6sealed | 672 | Black, Chris P [NIR] (1460) | Won 2-1 | +171534 |
| 7sealed | 649 | Malik, Martin (1573) | Lost 0-2 | -181516 |
| top | average opponent: 1494record: 4-3 | new rating: 1516 | ||