Pirisi, Istvan
Current rating: 1498
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 312 | Mayer, Manuel (1500) | Won 2-1 | +181515 |
| 2sealed | 102 | Pick, Tobias (1574) | Draw 1-1 | +11516 |
| 3sealed | 146 | Casnji, Daniel (1431) | Won 2-1 | +171533 |
| 4sealed | 104 | Ceska, Pavel (1574) | Won 2-1 | +181551 |
| 5sealed | 49 | Eckl, Sebastian (1603) | Lost 0-2 | -171534 |
| 6sealed | 123 | Hecht, Stefan (1528) | Won 2-0 | +181552 |
| 7sealed | 76 | Zajicek, Martin (1521) | Lost 1-2 | -181534 |
| 8sealed | 109 | Lamper, Jan (1517) | Lost 0-2 | -191515 |
| 9sealed | 119 | Schenk, Michael (1533) | Lost 0-2 | -171498 |
| top | average opponent: 1531record: 4-4-1 | new rating: 1498 | ||
| Grand Prix Vienna 2001 (ODY limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 91 | Elekes, Daniel (1500) | Lost 0-2 | -191518 |
| 2sealed | 284 | Stranak, Martin (1410) | Lost 0-2 | -201498 |
| 3sealed | 290 | Weger, David Klemens (1464) | Won 2-0 | +181516 |
| 4sealed | 221 | Jehl, Harald (1486) | Lost 0-2 | -191497 |
| top | average opponent: 1465record: 1-3 | new rating: 1497 | ||
| Grand Prix Prague 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 108 | Mazurova, Yulia (1500) | Won 2-0 | +181518 |
| 2sealed | 118 | Findejs, Jan (1518) | Won 2-1 | +181536 |
| 3sealed | 6 | Blech, Reinhard (1535) | Lost 0-2 | -181518 |
| 4sealed | 89 | Cech, Vit (1501) | Lost 0-2 | -181500 |
| 5sealed | 164 | Hanton, Oldrich (1500) | Won 2-1 | +181518 |
| 6sealed | 116 | Kuben, Petr (1517) | Won 2-1 | +181536 |
| 7sealed | 72 | Gromko, Radoslaw (1597) | Lost 1-2 | -171519 |
| 8sealed | 100 | Zbynek, Jurik (1520) | Won 2-0 | +181537 |
| top | average opponent: 1523record: 5-3 | new rating: 1537 | ||