Polifka, Klaus
Current rating: 1454
Record: 15-19-1
| Grand Prix Utrecht 2019 (ELD limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 516 | Skeparnides, George (1543) | Draw 1-1 | +11471 |
| 2sealed | 541 | Gati, Sizar (1507) | Won 2-1 | +191490 |
| 3sealed | 327 | de Lazaro, Sergio (1501) | Lost 0-2 | -181472 |
| 4sealed | 470 | Verite, Nicolas (1472) | Lost 0-2 | -181454 |
| top | average opponent: 1506record: 1-2-1 | new rating: 1454 | ||
| Grand Prix Strasbourg 2019 (RNA limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 293 | Lenotte, Luc (1526) | Lost 1-2 | -171468 |
| 2sealed | 612 | Odobesko, Artem (1498) | Lost 0-2 | -171451 |
| 3sealed | 768 | Bachmann, Andreas (1464) | Won 2-0 | +181469 |
| 4sealed | 634 | Schuer, Alan (1473) | Won 2-0 | +181487 |
| 5sealed | 387 | Schelkes, Tobias (1553) | Lost 1-2 | -171470 |
| top | average opponent: 1503record: 2-3 | new rating: 1470 | ||
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 733 | Samarra, Marc (1742) | Lost 0-2 | -141476 |
| 2sealed | 1090 | Diekmann, Jan Lukas (1483) | Won 2-1 | +181494 |
| 3sealed | 624 | Luczak, Miroslaw (1539) | Won 2-1 | +191513 |
| 4sealed | 626 | Durand, Victor (1882) | Lost 0-2 | -121501 |
| 5sealed | 582 | Gammaitoni, Eli (1605) | Lost 0-2 | -161485 |
| top | average opponent: 1650record: 2-3 | new rating: 1485 | ||
| Grand Prix Metz 2017 (HOU limited) | starting rating: 1494 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 338 | Cochois, Alexandre (1500) | Won 2-0 | +181512 |
| 2sealed | 313 | Paquier, Yael (1590) | Lost 1-2 | -171495 |
| 3sealed | 449 | Moeller, Marco (1538) | Lost 0-2 | -171478 |
| 4sealed | 641 | Ellmaurer, Steffen (1480) | Won 2-1 | +181496 |
| 5sealed | 482 | Oppliger, Daniel (1594) | Won 2-1 | +201516 |
| 6sealed | 357 | Herr, Boris (1329) | Won 2-0 | +151531 |
| 7sealed | 167 | Fokkema, Toon (1308) | Lost 0-2 | -221509 |
| 8sealed | 372 | Pedron, Tom (1453) | Lost 1-2 | -191490 |
| top | average opponent: 1474record: 4-4 | new rating: 1490 | ||
| Grand Prix Prague 2017 (AER limited) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 538 | Helfer, Felix (1528) | Won 2-0 | +191530 |
| 2sealed | 36 | Lambrich, Benjamin (1605) | Lost 1-2 | -171513 |
| 3sealed | 792 | Dorman, Nicolas (1500) | Lost 0-2 | -181495 |
| 4sealed | 674 | Hudelmaier, Ralph (1373) | Won 2-0 | +161511 |
| 5sealed | 673 | Steurer, Matthaus (1579) | Lost 0-2 | -171494 |
| top | average opponent: 1517record: 2-3 | new rating: 1494 | ||
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 166 | Gruber, Klaas (1500) | Lost 1-2 | -181482 |
| 2sealed | 280 | Kipfstuhl, Hans (1482) | Won 2-0 | +181500 |
| 3sealed | 220 | Nowak, Kamil (1503) | Won 2-1 | +181518 |
| 4sealed | 250 | Lange, Robert (1544) | Won 2-1 | +191537 |
| 5sealed | 161 | Hofmann, Mike (1591) | Won 2-1 | +191556 |
| 6sealed | 77 | Muhlbock, Marc (1718) | Lost 0-2 | -161540 |
| 7sealed | 156 | Fenaux-Briot, Romain (1789) | Lost 0-2 | -131527 |
| 8sealed | 133 | Hollmann, Marc (1661) | Lost 0-2 | -161511 |
| top | average opponent: 1598record: 4-4 | new rating: 1511 | ||