Gierszon, Blazej
Current rating: 1492
Record: 10-12-3
| Grand Prix Lyon 2019 (ELD standard) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 138 | Picot, Kedian (1500) | Won 2-0 | +181508 |
| 2standard | 110 | Petit Pas, Damien (1560) | Draw 1-1 | +11509 |
| 3standard | 216 | Calvel, Yoann (1513) | Won 2-1 | +181527 |
| 4standard | 104 | Druesne, Thomas (1563) | Lost 1-2 | -171510 |
| 5standard | 216 | Klein, Jean-Philippe (1500) | Lost 1-2 | -181492 |
| top | average opponent: 1527record: 2-2-1 | new rating: 1492 | ||
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 312 | Israeli, Pesach (1512) | Won 2-0 | +201457 |
| 2sealed | 331 | Miao, Shiyu (1527) | Won 2-1 | +191476 |
| 3sealed | 214 | Kerem, Hannes (1972) | Lost 1-2 | -101466 |
| 4sealed | 131 | Jelinek, Jan (1431) | Won 2-0 | +181484 |
| 5sealed | 88 | Pieprzyk, Marek (1584) | Lost 1-2 | -161468 |
| 6sealed | 147 | Rosi, Giovanni (1686) | Lost 1-2 | -141454 |
| 7sealed | 378 | Demont, Yann (1386) | Won 2-0 | +161470 |
| 8sealed | 348 | Superson, Dawid (1566) | Won 2-1 | +201490 |
| top | average opponent: 1583record: 5-3 | new rating: 1490 | ||
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1441 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 839 | Weidemann, Paul (1762) | Lost 1-2 | -121429 |
| 2sealed | 1240 | Scherpenzeel, Dennis (1592) | Lost 1-2 | -151414 |
| 3sealed | 1108 | Moravkova, Pavlina (1466) | Won 2-0 | +191433 |
| 4sealed | 823 | Gullicher, Hanno (1435) | Won 2-0 | +181451 |
| 5sealed | 796 | Nicosia, Alvaro (1726) | Lost 1-2 | -141437 |
| top | average opponent: 1596record: 2-3 | new rating: 1437 | ||
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 234 | Anisimov, Vladyslav (1500) | Lost 1-2 | -181482 |
| 2sealed | 471 | Sick, Jonas (1513) | Draw 1-1 | +11483 |
| 3sealed | 775 | Cremaschi, Daniele (1456) | Draw 1-1 | -11482 |
| 4sealed | 830 | Geuens, Peter (1330) | Lost 1-2 | -211461 |
| 5sealed | 789 | Shepherd, David (1381) | Won 2-1 | +171478 |
| 6sealed | 679 | Schulze, Daniel (1489) | Lost 0-2 | -181460 |
| 7sealed | 598 | Odijk, Martijn (1399) | Lost 0-2 | -191441 |
| top | average opponent: 1438record: 1-4-2 | new rating: 1441 | ||