Gessner, Jan-Christoph
Current rating: 1388
| Grand Prix Utrecht 2019 (ELD limited) | starting rating: 1416 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 258 | Amatdakoen, Devon (1463) | Lost 0-1 | -171399 |
| 2sealed | 705 | Krejsa, Tomas (1680) | Lost 1-2 | -131386 |
| 3sealed | 639 | Weber, Patrick (1401) | Lost 0-2 | -181368 |
| 4sealed | 673 | Picozzi, Matteo (1452) | Won 2-0 | +201388 |
| top | average opponent: 1499record: 1-3 | new rating: 1388 | ||
| Grand Prix Strasbourg 2019 (RNA limited) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 348 | Davies, William (1500) | Lost 1-2 | -171413 |
| 2sealed | 556 | Pitiot, Thomas (1466) | Lost 1-2 | -171396 |
| 3sealed | 239 | Sroczynski, Bruno (1466) | Won 2-0 | +191415 |
| 4sealed | 542 | Clark, Jeremy (1481) | Lost 1-2 | -161399 |
| 5sealed | 630 | Pimpernelle, Sebastien (1359) | Won 2-0 | +171416 |
| top | average opponent: 1455record: 2-3 | new rating: 1416 | ||
| Grand Prix Lille 2018 (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 148 | Drouard, Julien (1597) | Lost 1-2 | -161484 |
| 2standard | 388 | Auria, Emile (1483) | Lost 1-2 | -181466 |
| 3standard | 575 | Luong, Hai-Hau (1484) | Won 2-1 | +181484 |
| 4standard | 553 | Maymard, Christophe (1465) | Lost 0-2 | -181466 |
| 5standard | 601 | Neleman, Yannick (1467) | Lost 0-2 | -181448 |
| 6standard | 562 | Negrini, Sebastien (1452) | Lost 0-2 | -181430 |
| top | average opponent: 1491record: 1-5 | new rating: 1430 | ||