Michalczuk, Piotr
Current rating: 1604
Record: 16-12
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 157 | Lis, Michal (1562) | Won 2-1 | +191514 |
| 2standard | 173 | Farjan, Pawel (1480) | Won 2-0 | +171531 |
| 3standard | 35 | Krejci, Radek (1433) | Won 2-1 | +171548 |
| 4standard | 63 | Gierszewski, Piotr (1695) | Lost 1-2 | -161532 |
| 5standard | 262 | Hajek, Michal (1727) | Lost 1-2 | -141518 |
| 6standard | 345 | Nickelsen, Kjartan (1668) | Won 2-1 | +211539 |
| 7standard | 203 | Boldrini, Giulio (1873) | Won 2-1 | +231562 |
| 8standard | 166 | Rriska, Panajoti (1572) | Won 2-1 | +191581 |
| 9standard | 93 | Jara Perez, Juan Carlos (1633) | Won 2-0 | +191600 |
| 10standard | 74 | Bignami, Andrea (1828) | Won 2-1 | +221622 |
| 11standard | 27 | Hadamek, Ondrej (1604) | Won 2-1 | +171639 |
| 12standard | 23 | Czerepak, Wojciech (1640) | Lost 1-2 | -181621 |
| 13standard | 38 | Geffroy, Francois (1623) | Lost 1-2 | -181603 |
| 14standard | 69 | Rouchmann, Casper (1608) | Lost 1-2 | -181585 |
| 15standard | 103 | Battistuzzi, Nicolo (1601) | Won 2-1 | +191604 |
| average opponent: 1636record: 10-5 | new rating: 1604 | |||
| Grand Prix Metz 2017 (HOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 40 | Cheng, Nicholas (1612) | Lost 0-2 | -161484 |
| 4sealed | 202 | Gibergues, Fabien (1452) | Lost 1-2 | -191465 |
| 5sealed | 512 | Volze, Felix (1524) | Lost 0-2 | -161449 |
| 6sealed | 592 | Slimani, Hichem (1477) | Won 2-0 | +181467 |
| 7sealed | 441 | Weimer, Andreas (1500) | Won 2-0 | +191486 |
| 8sealed | 367 | Pages Vidal, Marc (1680) | Won 2-1 | +211507 |
| 9sealed | 308 | Simonin, Romain (1540) | Won 2-0 | +191526 |
| 10draft | 175 | Freis, Matthias (1614) | Won 2-1 | +191545 |
| 11draft | 136 | Elbaz, Mikael (1576) | Lost 1-2 | -171528 |
| 12draft | 50 | Bailly, Laurent (1543) | Lost 1-2 | -181510 |
| 13draft | 160 | Bellemin, Damien (1522) | Lost 1-2 | -181492 |
| 14draft | 42 | Servius, Christophe (1609) | Won 2-0 | +211513 |
| 15draft | 165 | Alamercery, Arthur (1531) | Lost 0-2 | -181495 |
| average opponent: 1552record: 6-7 | new rating: 1495 | |||