Niewiarowski, Artur
Current rating: 1534
Record: 14-13-1
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 427 | Korcina, Krzysztof (1500) | Won 2-0 | +181513 |
| 2sealed | 213 | Jankowski, Arno (1574) | Lost 1-2 | -161497 |
| 3sealed | 530 | Gala, Tomasz (1505) | Won 2-1 | +181515 |
| 4sealed | 417 | Trunk, Marcel (1601) | Lost 0-2 | -171498 |
| 5sealed | 481 | Prokhorov, Vladislav (1454) | Won 2-0 | +181516 |
| 6sealed | 349 | Zazhmitskii, Pavel (1515) | Won 2-0 | +171533 |
| 7sealed | 266 | Melovski, Dimche (1520) | Won 2-0 | +181551 |
| 8sealed | 129 | Kalakou, Myrto (1567) | Lost 0-2 | -171534 |
| top | average opponent: 1530record: 5-3 | new rating: 1534 | ||
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 274 | Maks, Maciej (1500) | Won 2-1 | +191510 |
| 2standard | 125 | Mierzynski, Patryk (1518) | Won 2-0 | +181528 |
| 3standard | 237 | Wlodarczyk, Lukasz (1530) | Won 2-0 | +181546 |
| 4standard | 119 | Toomepuu, Tarmo (1535) | Lost 1-2 | -181528 |
| 5standard | 89 | Molle, Niels (1767) | Lost 1-2 | -141514 |
| 6standard | 220 | Strautz, Marcel (1486) | Lost 1-2 | -191495 |
| top | average opponent: 1556record: 3-3 | new rating: 1495 | ||
| Grand Prix Brussels 2008 (SHM limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 119 | Meseguer Ruiz, Antonio (1541) | Won 2-1 | +191539 |
| 3sealed | 26 | Cavaglieri, William (1751) | Lost 1-2 | -151524 |
| 4sealed | 195 | Merckx, Robin (1493) | Won 2-0 | +181542 |
| 5sealed | 128 | Grafensteiner, Daniel (1831) | Lost 0-2 | -131529 |
| 6sealed | 156 | Mauger, Guillaume (1507) | Lost 1-2 | -181511 |
| 7sealed | 159 | Praiwan, Thanakorn (1450) | Lost 0-0 | -201491 |
| top | average opponent: 1596record: 2-4 | new rating: 1491 | ||
| Grand Prix Malmo 2006 (CSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 106 | Persson, Donald (1500) | Lost 1-2 | -181482 |
| 2sealed | 152 | Pesla, Krzysztof (1580) | Draw 1-1 | +21484 |
| 3sealed | 182 | Dahlquist, Fredrik (1468) | Lost 1-2 | -181466 |
| 4sealed | 235 | Danek, Jirka (1467) | Won 2-0 | +181484 |
| 5sealed | 187 | Schram, Robert (1483) | Won 2-0 | +181502 |
| 6sealed | 153 | Liljefeldt, Olle (1499) | Won 2-1 | +171519 |
| 7sealed | 115 | Braun, Viktor (1522) | Won 2-0 | +191538 |
| 8sealed | 79 | Iher, Kaupo (1576) | Lost 1-2 | -181520 |
| top | average opponent: 1512record: 4-3-1 | new rating: 1520 | ||