Halczak, Mateusz
Current rating: 1417
Record: 13-20
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1421 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 281 | Cohen, Aaron (1582) | Lost 0-2 | -151406 |
| 2standard | 442 | Hardin, Jeffrey (1581) | Won 2-1 | +211427 |
| 3standard | 470 | Dohmen, David (1568) | Won 2-0 | +211448 |
| 4standard | 371 | Stober, Martin (1516) | Lost 0-2 | -171431 |
| 5standard | 457 | Klutz, Andreas (1466) | Lost 1-2 | -181413 |
| 6standard | 483 | Nagy, Szabolcs (1483) | Won 2-1 | +201433 |
| 7standard | 385 | Kytka, Petr (1537) | Lost 0-2 | -161417 |
| top | average opponent: 1533record: 3-4 | new rating: 1417 | ||
| Grand Prix Milan 2014 (JOU limited) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 250 | Passerini, Andrea (1320) | Lost 0-2 | -201429 |
| 2sealed | 428 | Venneri, Luca (1441) | Won 2-1 | +181447 |
| 3sealed | 414 | Nisti, Luca (1448) | Won 2-1 | +181465 |
| 4sealed | 302 | Boucek, Jaroslav (1783) | Lost 0-2 | -131452 |
| 5sealed | 366 | Danieli, Niv (1611) | Lost 0-2 | -151437 |
| 6sealed | 387 | Valverde Calero, Fernando (1529) | Lost 1-2 | -161421 |
| top | average opponent: 1522record: 2-4 | new rating: 1421 | ||
| Grand Prix Vienna 2014 (BNG limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 53 | Barrera, Joan (1500) | Lost 1-2 | -171445 |
| 2sealed | 331 | Loparski, Andrej (1396) | Won 2-1 | +171462 |
| 3sealed | 402 | Rakogon, Alexey (1518) | Won 2-1 | +191481 |
| 4sealed | 291 | Golubkin, Sergey (1626) | Lost 1-2 | -161465 |
| 5sealed | 402 | Kopietz, Matthias (1534) | Lost 0-2 | -161449 |
| 6sealed | 369 | Csomos, Janos (1454) | Won 2-1 | +181467 |
| 7sealed | 278 | Bezusek, Pavel (1480) | Lost 0-2 | -181449 |
| top | average opponent: 1501record: 3-4 | new rating: 1449 | ||
| Grand Prix Vienna 2013 (THS standard) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 127 | Lehner, Manuel (1575) | Lost 0-2 | -161412 |
| 2standard | 413 | Salati, Davide (1482) | Won 2-0 | +191431 |
| 3standard | 498 | Lassacher, Klaus (1502) | Won 2-0 | +201451 |
| 4standard | 349 | Tapody, Zoltan Istvan (1759) | Lost 1-2 | -131438 |
| 5standard | 397 | Athanasopoulos, Themis (1593) | Lost 1-2 | -151423 |
| 6standard | 504 | Cozzaglio, Enrico (1283) | Lost 0-2 | -211402 |
| 7standard | 553 | Drevin, Olof (1464) | Won 2-1 | +201422 |
| 8standard | 450 | Kuklinek, Ondrej (1490) | Won 2-0 | +191441 |
| 9standard | 299 | Schonegger, Philipp (1606) | Won 2-0 | +211462 |
| top | average opponent: 1528record: 5-4 | new rating: 1462 | ||
| Grand Prix Warsaw 2013 (M14 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 42 | Dabrowski, Tomasz (1500) | Lost 0-2 | -181482 |
| 2standard | 235 | Evi, Andrei Dragos (1506) | Lost 0-2 | -181464 |
| 3standard | 387 | Linell, Patrik (1459) | Lost 1-2 | -181446 |
| 4standard | 471 | Droppert, Olivier (1402) | Lost 1-2 | -181428 |
| top | average opponent: 1467record: 0-4 | new rating: 1428 | ||