Bochnak, Piotr
Current rating: 1619
Record: 22-21-2
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 341 | Ghera, Mattia (1500) | Won 2-1 | +201451 |
| 2sealed | 451 | Felix, Lukas (1360) | Won 2-0 | +161467 |
| 3sealed | 181 | Repetti, Guillaume (1686) | Won 2-1 | +221489 |
| 4sealed | 86 | Kentesber, Sam (1607) | Lost 0-2 | -161473 |
| 5sealed | 93 | Beeby, Richard (1507) | Won 2-0 | +191492 |
| 6sealed | 32 | Boudeghdegh, Lotfi (1508) | Lost 0-2 | -181474 |
| 7sealed | 236 | Sienko, Piotr (1759) | Won 2-1 | +231497 |
| 8sealed | 312 | Grefling, Jakub (1562) | Won 2-0 | +191516 |
| 9sealed | 395 | Britton, Steven (1520) | Won 2-1 | +181534 |
| 10draft | 349 | Tokajuk, Marcin (1651) | Won 2-1 | +201554 |
| 11draft | 388 | Jabs, Slawomir (1712) | Won 2-0 | +211575 |
| 12draft | 395 | Konig, Noah (1650) | Won 2-0 | +201595 |
| 13draft | 395 | Vanek, Jiri (1947) | Lost 0-2 | -121583 |
| 14draft | 377 | Kryzhnii, Mykola (1640) | Won 2-0 | +191602 |
| 15draft | 364 | Czech, David (1579) | Won 2-1 | +171619 |
| top | average opponent: 1613record: 12-3 | new rating: 1619 | ||
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 51 | Andren, Lukas (1536) | Draw 1-1 | +21434 |
| 4standard | 168 | Poniatowicz, Tomasz (1560) | Lost 1-2 | -161418 |
| 5standard | 298 | Sesia, Benjamin (1505) | Won 1-0 | +201438 |
| 6standard | 193 | Kreuz, Alexander (1750) | Draw 1-1 | +51443 |
| 7standard | 282 | Ylenius, Henri (1503) | Lost 0-2 | -171426 |
| 8standard | 347 | Guluk, Ayk (1513) | Won 1-0 | +201446 |
| 9standard | 262 | Piwko, Pawel (1630) | Lost 1-2 | -151431 |
| top | average opponent: 1571record: 2-3-2 | new rating: 1431 | ||
| Grand Prix Warsaw 2016 (KLD standard) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 229 | Ihnat, Peter (1541) | Won 2-0 | +201429 |
| 2standard | 27 | Gaponov, Nikita (1564) | Won 2-1 | +211450 |
| 3standard | 206 | Prunariu, Alexandru (1679) | Won 2-1 | +221472 |
| 4standard | 135 | Floch, Ivan (2077) | Lost 1-2 | -91463 |
| 5standard | 211 | Marinos, Georgios (1547) | Lost 0-2 | -161447 |
| 6standard | 226 | Teppa, Michaele (1535) | Won 2-0 | +201467 |
| 7standard | 230 | Friedrich, Marcin (1472) | Lost 1-2 | -181449 |
| 8standard | 272 | Kosmela, Michal (1520) | Lost 0-2 | -171432 |
| top | average opponent: 1617record: 4-4 | new rating: 1432 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1384 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 269 | Sucquet, Alexander (1535) | Lost 0-2 | -161368 |
| 4standard | 232 | Johansson, Christoffer (1538) | Won 2-1 | +221390 |
| 5standard | 299 | Mittendorfer, Lukas (1825) | Lost 0-2 | -111379 |
| 6standard | 418 | Draack, Fabian (1544) | Won 2-0 | +211400 |
| 7standard | 241 | Mulari, Mika (1564) | Won 2-0 | +211421 |
| 8standard | 82 | Soumet, Arnaud (1749) | Lost 0-2 | -121409 |
| top | average opponent: 1626record: 3-3 | new rating: 1409 | ||
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 128 | Brown, Eric (1554) | Lost 1-2 | -161433 |
| 4standard | 204 | Siirand, Ahti (1563) | Lost 1-2 | -161417 |
| 5standard | 369 | Piszcz, Tomasz (1489) | Lost 0-2 | -171400 |
| 7standard | 397 | Wong, Hok Chun Anson (1469) | Lost 0-2 | -161384 |
| top | average opponent: 1519record: 0-4 | new rating: 1384 | ||
| Grand Prix Warsaw 2014 (JOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 134 | Lafogler, Mark (1518) | Won 2-0 | +181518 |
| 2sealed | 115 | Kmet, Adam (1513) | Lost 1-2 | -181500 |
| 3sealed | 368 | Klein, Martin (1503) | Lost 1-2 | -181482 |
| 4sealed | 407 | Tong, Wu (1737) | Lost 1-2 | -131469 |
| 5sealed | 417 | Jurkowski, Dominik (1362) | Lost 0-2 | -201449 |
| top | average opponent: 1527record: 1-4 | new rating: 1449 | ||