Dobroruka, Igor
Current rating: 1621
Record: 25-20-2
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1509 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 364 | Panchartek, Zbysek (1593) | Won 2-1 | +191528 |
| 2standard | 200 | Moeken, Ed (1325) | Won 2-1 | +151543 |
| 3standard | 142 | Vieren, Peter (1951) | Won 2-0 | +251568 |
| 4standard | 141 | Tarnowski, Rafal (1563) | Won 2-1 | +181586 |
| 5standard | 28 | Utzon, Mads (1744) | Won 2-1 | +201606 |
| 6standard | 16 | Knocinski, Przemek (1923) | Lost 0-2 | -121594 |
| 7standard | 73 | Demange, Kevin (1745) | Lost 0-2 | -151579 |
| 8standard | 179 | Arabi-Eter, Samir (1565) | Won 2-1 | +181597 |
| 9standard | 65 | Beck, Philipp (1703) | Won 2-0 | +191616 |
| 10standard | 85 | Dietrich, Denis (1616) | Lost 1-2 | -181598 |
| 11standard | 74 | Campbell, Gary (1604) | Lost 1-2 | -171581 |
| 12standard | 83 | Kristoufek, Ladislav (1576) | Lost 0-2 | -191562 |
| 13standard | 85 | Mueller, Dominic (1731) | Won 2-0 | +221584 |
| 14standard | 78 | Pidutti, Paolo (1507) | Won 2-0 | +161600 |
| 15standard | 58 | Soumet, Arnaud (1745) | Won 2-0 | +211621 |
| top | average opponent: 1659record: 10-5 | new rating: 1621 | ||
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 218 | Chiappetta, Francesco (1500) | Draw 1-1 | 01532 |
| 2standard | 241 | Mosna, Karol (1500) | Won 2-1 | +171549 |
| 3standard | 289 | Susienka, Filip (1499) | Draw 1-1 | -11548 |
| 4standard | 396 | Gabriel, Michal (1402) | Lost 0-2 | -211527 |
| 5standard | 458 | Bottema, Rutger (1496) | Lost 0-2 | -181509 |
| top | average opponent: 1479record: 1-2-2 | new rating: 1509 | ||
| Grand Prix Prague 2014 (modern) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 191 | Kopicka, Ondrej (1500) | Won 2-0 | +171566 |
| 2modern | 229 | Langlotz, Thomas (1583) | Lost 0-2 | -171549 |
| 3modern | 548 | Krepli, Tibor Balazs (1441) | Won 2-0 | +161565 |
| 4modern | 240 | Frauenschlager, Matthias (1647) | Lost 1-2 | -171548 |
| 5modern | 488 | Beranek, Tomas (1562) | Lost 1-2 | -181530 |
| 6modern | 472 | Jathe, Nicolas (1711) | Won 2-1 | +221552 |
| 7modern | 426 | Szczepanowski, Lukasz (1554) | Lost 1-2 | -181534 |
| 8modern | 422 | MihuLowicz, Maciek (1489) | Won 2-0 | +171551 |
| 9modern | 346 | Feshti, Natalino (1504) | Lost 1-2 | -191532 |
| top | average opponent: 1554record: 4-5 | new rating: 1532 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 6 | Rosenkranz, Ondrej (1544) | Won 2-1 | +191502 |
| 2sealed | 72 | Wolff, Tobias (1551) | Lost 1-2 | -171485 |
| 3sealed | 148 | Vrsansky, Daniel (1464) | Won 2-0 | +171502 |
| 4sealed | 108 | Monsen, Patrick (1531) | Won 2-1 | +191521 |
| 5sealed | 72 | Havel, Jan (1697) | Lost 1-2 | -151506 |
| 6sealed | 123 | Nerhus, Steinar (1807) | Lost 0-2 | -131493 |
| 7sealed | 141 | Biman, Filip (1499) | Won 2-0 | +191512 |
| 8sealed | 114 | Nespor, Jaroslav (1517) | Won 2-0 | +181530 |
| 9sealed | 75 | Tang, Kiri (1617) | Won 2-0 | +191549 |
| top | average opponent: 1581record: 6-3 | new rating: 1549 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 237 | Podlaha, Martin (1525) | Lost 1-2 | -181482 |
| 2sealed | 212 | Vilziute, Vitalja (1482) | Won 2-1 | +181500 |
| 3sealed | 210 | De Marelle, Anthony (1516) | Lost 0-2 | -171483 |
| 4sealed | 272 | Zahora, Jan (1480) | Won 2-1 | +181501 |
| 5sealed | 213 | Novak, Jiri 2444 (1502) | Lost 0-2 | -181483 |
| 6sealed | 258 | Puchyr, Jan (1482) | Won 2-1 | +181501 |
| 7sealed | 197 | Jurek, Jiri (1501) | Won 2-1 | +181519 |
| 8sealed | 125 | Ortega Santos, Jon Ander (1510) | Lost 0-2 | -181501 |
| 9sealed | 119 | Matthies, Mario (1516) | Lost 0-2 | -181483 |
| top | average opponent: 1502record: 4-5 | new rating: 1483 | ||