Kollar, Dusan
Current rating: 1509
| Grand Prix Vienna 2014 (BNG limited) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 288 | Bozic, Mihajlo (1500) | Lost 1-2 | -191516 |
| 2sealed | 300 | Muchitsch, Michael (1482) | Won 2-0 | +181534 |
| 3sealed | 325 | Vanek, Vojtech (1468) | Lost 1-2 | -191515 |
| 4sealed | 446 | Vardzik, Marek (1600) | Lost 0-2 | -171498 |
| 5sealed | 514 | Guth, Christian (1443) | Won 2-0 | +171515 |
| 6sealed | 392 | Velo, Marina (1293) | Lost 0-2 | -221493 |
| 7sealed | 407 | Friedrich, Marcin (1446) | Lost 1-2 | -191474 |
| 8sealed | 361 | Bornelov, Susanne (1503) | Won 2-0 | +191493 |
| 9sealed | 299 | Vidal, Andreu (1388) | Won 2-0 | +161509 |
| top | average opponent: 1458record: 4-5 | new rating: 1509 | ||
| Grand Prix Prague 2013 (M14 limited) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 84 | Princ, Lukas (1542) | Lost 0-2 | -181538 |
| 2sealed | 445 | Pysz, Konrad S (1438) | Won 2-0 | +161554 |
| 3sealed | 580 | Tesar, Michal (1500) | Won 2-1 | +171571 |
| 4sealed | 363 | Landgraf, Mirko (1524) | Lost 0-1 | -191552 |
| 5sealed | 382 | Csomos, Janos (1469) | Won 2-1 | +171569 |
| 6sealed | 250 | Kleiner, Sebastian (1738) | Lost 0-2 | -151554 |
| 7sealed | 253 | Hilbert, Stefan (1503) | Lost 0-2 | -191535 |
| top | average opponent: 1531record: 3-4 | new rating: 1535 | ||
| Grand Prix London 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 300 | Halldorsson, Almar (1480) | Won 2-1 | +181518 |
| 2sealed | 138 | Strife, Conor (1520) | Won 2-0 | +181536 |
| 3sealed | 89 | Tomici, Sergio (1494) | Lost 0-2 | -191517 |
| 4sealed | 355 | Coles, Garon M (1469) | Lost 0-2 | -191498 |
| 5sealed | 493 | Greens, Jordan (1506) | Won 2-1 | +181516 |
| 6sealed | 360 | Prat, Christophe (1477) | Won 2-0 | +171533 |
| 7sealed | 328 | Linder, Peter (1536) | Won 2-1 | +191552 |
| 8sealed | 191 | Martin, Daniel [ENG] (1555) | Won 2-0 | +181570 |
| 9sealed | 181 | Koch, Florian (1835) | Lost 1-2 | -141556 |
| top | average opponent: 1541record: 6-3 | new rating: 1556 | ||