Lech, Cezary
Current rating: 1448
Record: 15-19
| Grand Prix Warsaw 2016 (KLD standard) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 13 | Nilsen, Kent (1500) | Won 2-0 | +191478 |
| 2standard | 142 | Rolph, Sam-Luca (1799) | Lost 1-2 | -131465 |
| 3standard | 346 | Oppliger, Daniel (1595) | Lost 0-2 | -151450 |
| 4standard | 427 | Stefanski, Mateusz (1481) | Won 2-1 | +181468 |
| 5standard | 414 | Harezlak, Wiktor (1516) | Lost 0-2 | -171451 |
| 6standard | 423 | Szulborski, Michal (1355) | Lost 1-2 | -191432 |
| 7standard | 452 | Breviglieri, Massimo (1435) | Won 2-0 | +181450 |
| 8standard | 356 | Ambrozy, Marcin (1383) | Won 2-0 | +161466 |
| 9standard | 267 | Grendelmeier, Nadine (1471) | Lost 0-2 | -181448 |
| top | average opponent: 1504record: 4-5 | new rating: 1448 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 158 | Gonzalez, Angel (1500) | Lost 0-2 | -171451 |
| 2standard | 371 | Hornacek, Martin (1482) | Won 1-0 | +181469 |
| 3standard | 564 | Amateis, Alessandro (1545) | Lost 0-2 | -171452 |
| 4standard | 570 | Krottmaier, Gernot (1486) | Lost 0-2 | -171435 |
| 5standard | 588 | Herrmannsdorfer, Dominik (1404) | Won 2-0 | +171452 |
| 6standard | 548 | Viehmann, Dominik (1487) | Won 2-0 | +191471 |
| 7standard | 348 | Hartwik, Kamil (1555) | Lost 1-2 | -161455 |
| 8standard | 383 | Postel, Christopher (1361) | Won 2-1 | +161471 |
| 9standard | 272 | Nielsen, Simon (1821) | Lost 1-2 | -121459 |
| top | average opponent: 1516record: 4-5 | new rating: 1459 | ||
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 40 | Posolda, Ondrej (1714) | Lost 0-2 | -141469 |
| 2standard | 268 | Wieclawek, Daniel (1483) | Won 2-1 | +191488 |
| 3standard | 321 | Janusz, Drzal (1504) | Won 2-1 | +181506 |
| 4standard | 226 | Bigorne, Aurelien (1434) | Lost 0-2 | -191487 |
| 5standard | 395 | Rantila, Anton (1540) | Lost 0-2 | -171470 |
| 6standard | 412 | Milosevic, Nikola (1486) | Lost 1-2 | -181452 |
| 7standard | 382 | Lajs, Martin (1389) | Lost 0-2 | -191433 |
| 8standard | 333 | Tyczynski, Slawomir (1381) | Won 2-1 | +171450 |
| 9standard | 285 | Hegedus, Daniel (1461) | Won 2-1 | +181468 |
| top | average opponent: 1488record: 4-5 | new rating: 1468 | ||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 470 | Hoekstra, Walter (1589) | Lost 0-2 | -161484 |
| 2standard | 535 | Violin, Michele (1483) | Won 2-0 | +181502 |
| 3standard | 580 | Sloetjes, Gerben (1507) | Won 2-0 | +181520 |
| 4standard | 439 | Bijma, Jacques (1517) | Lost 1-2 | -181502 |
| 5standard | 549 | de Goede, Lennaert (1500) | Lost 0-2 | -181484 |
| 6standard | 497 | Eijsackers, Lennard (1477) | Won 2-0 | +171501 |
| 7standard | 403 | Lange, Philipp (1484) | Lost 0-2 | -181483 |
| top | average opponent: 1508record: 3-4 | new rating: 1483 | ||