Kosciolek, Maciej
Current rating: 1558
Record: 17-13-1
| Grand Prix London 2013 (GTC limited) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 458 | DAWES, RYAN M (1500) | Lost 0-2 | -201578 |
| 2sealed | 774 | Jones, Chris [ENG] (1483) | Lost 0-2 | -201558 |
| top | average opponent: 1492record: 0-2 | new rating: 1558 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1654 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 527 | Davios, Dimitris (1660) | Lost 1-2 | -171637 |
| 5sealed | 584 | Geuens, Peter (1607) | Lost 0-2 | -191618 |
| 6sealed | 611 | Hauer, Johannes (1502) | Lost 1-2 | -201598 |
| top | average opponent: 1590record: 0-3 | new rating: 1598 | ||
| Grand Prix Paris 2011 (MBS limited) | starting rating: 1688 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 205 | Voda, Bogdan (1334) | Lost 0-2 | -251663 |
| 2sealed | 273 | Gamblin, Mickael (1388) | Draw 1-1 | -51658 |
| 3sealed | 262 | Gaulet, Gabriel (1518) | Won 2-0 | +161674 |
| 4sealed | 234 | Montahuc, Sebastien (1598) | Lost 0-2 | -201654 |
| top | average opponent: 1459record: 1-2-1 | new rating: 1654 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 548 | Liron, Tamir (1500) | Won 2-0 | +171555 |
| 3sealed | 606 | Filler, Michael (1525) | Won 2-1 | +171572 |
| 4sealed | 513 | Hollmann, Carsten (1558) | Won 2-0 | +181590 |
| 5sealed | 545 | Bakhtinov, Alexey (1519) | Lost 0-2 | -191571 |
| 6sealed | 558 | Sadowski, Pawel (1555) | Won 2-0 | +181589 |
| 7sealed | 532 | Thidemann, Anders (1640) | Won 2-1 | +191608 |
| 8sealed | 524 | Oberauer, Felix (1531) | Lost 0-2 | -201588 |
| 9sealed | 562 | Heigerer, Stefan (1726) | Won 2-0 | +211609 |
| 10draft | 74 | Papatsarouchas, Evangelos (1776) | Won 2-1 | +211630 |
| 11draft | 27 | Fyssas, Antonis (1679) | Won 2-1 | +191649 |
| 12draft | 14 | Liin, Vahur-Peeter (1697) | Lost 0-2 | -181631 |
| 13draft | 39 | Skalevik, Tore (1755) | Won 2-0 | +211652 |
| 14draft | 3 | Wolter, Christoph (1645) | Won 2-1 | +181670 |
| 15draft | 14 | Telarov, Aleksa (1668) | Won 2-1 | +181688 |
| top | average opponent: 1627record: 11-3 | new rating: 1688 | ||
| Grand Prix Brighton 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 150 | Dalgaard, Dennis (1505) | Lost 1-2 | -181482 |
| 2sealed | 221 | Van Volsem, Geert (1385) | Won 2-0 | +161498 |
| 3sealed | 183 | Billiau, Michel (1423) | Won 2-1 | +171515 |
| 4sealed | 162 | Logan, William (1488) | Won 2-1 | +171532 |
| 5sealed | 165 | Grafham, Darren (1613) | Lost 1-2 | -161516 |
| 6sealed | 150 | Engleitner, Herbert (1666) | Won 2-0 | +211537 |
| 7sealed | 138 | Venturelli, Davide (1537) | Won 2-0 | +181555 |
| 8sealed | 51 | Castejon, Dani (1609) | Lost 1-2 | -171538 |
| top | average opponent: 1528record: 5-3 | new rating: 1538 | ||