Kupper, Lorenz
Current rating: 1486
Record: 8-9
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 244 | Vollebregt, Joost (1771) | Won 2-0 | +231543 |
| 2standard | 147 | Hoonderd, Marco (1589) | Lost 1-2 | -171526 |
| 3standard | 387 | Drucke, Thomas (1497) | Lost 1-2 | -191507 |
| 4standard | 495 | Kiskis, Saulius (1508) | Won 2-0 | +181525 |
| 5standard | 440 | Deschoux, Franck (1502) | Won 2-0 | +181543 |
| 6standard | 273 | Monange, Frederic (1489) | Lost 0-2 | -191524 |
| 7standard | 316 | Pederzini, Giacomo (1407) | Lost 0-2 | -201504 |
| 8standard | 333 | Guillet, Damien (1503) | Lost 0-2 | -181486 |
| average opponent: 1533record: 3-5 | new rating: 1486 | |||
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 252 | Pohle, Filip (1511) | Lost 1-2 | -181482 |
| 2standard | 322 | Babek, Oskar (1481) | Won 2-1 | +181500 |
| 3standard | 363 | Korpikiewicz, Jacek (1584) | Lost 0-2 | -161484 |
| 4standard | 500 | Lapusan, Paul (1478) | Lost 1-2 | -181466 |
| 5standard | 541 | Nowak, Przemyslaw (1481) | Won 2-1 | +181484 |
| 6standard | 487 | Di Siero, Domenico (1566) | Won 2-1 | +191503 |
| 7standard | 360 | Kakol, Bartosz (1501) | Won 2-0 | +181521 |
| 8standard | 280 | Miarecki, Patryk (1511) | Won 2-1 | +181539 |
| 9standard | 187 | Voiteh, Stas (1501) | Lost 0-2 | -191520 |
| average opponent: 1513record: 5-4 | new rating: 1520 | |||