Pfefferkorn, Markus
Current rating: 1519
| Grand Prix Barcelona 2018 (modern) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 394 | Lifante Fernandez, Roberto (1553) | Won 2-1 | +201469 |
| 2modern | 76 | Prlic, Stefan (1782) | Won 2-0 | +231492 |
| 3modern | 337 | Karesvuori, Karo (1646) | Lost 1-2 | -151477 |
| 4modern | 302 | Bourdy, Wilfried (1395) | Won 2-1 | +171494 |
| 5modern | 257 | Mathews, Thomas (1606) | Draw 1-1 | +21496 |
| 6modern | 227 | Gilles, Maxime (1708) | Lost 0-2 | -141482 |
| 7modern | 348 | Schlenker, Max (1518) | Won 2-0 | +181500 |
| 8modern | 238 | Segura Monterde, Sergi (1542) | Won 2-0 | +191519 |
| top | average opponent: 1594record: 5-2-1 | new rating: 1519 | ||
| Grand Prix Birmingham 2017 (modern) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 511 | Harasymiw, Mac (1421) | Lost 1-2 | -181448 |
| 2modern | 580 | Liversidge, Matthew (1482) | Lost 0-0 | -181430 |
| 3modern | 831 | Rosa, Rui (1334) | Won 2-1 | +161446 |
| 4modern | 587 | Herruzo, David (1516) | Lost 1-2 | -161430 |
| 5modern | 743 | Gunner, Michael (1359) | Won 2-1 | +161446 |
| 6modern | 614 | Birchall, David (1485) | Won 2-0 | +191465 |
| 7modern | 420 | Czerwik, James (1508) | Lost 0-2 | -171448 |
| 8modern | 574 | Hillmann, Alexander (1474) | Lost 0-2 | -181430 |
| 9modern | 516 | Dobbs, Brendon (1463) | Won 2-0 | +191449 |
| top | average opponent: 1449record: 4-5 | new rating: 1449 | ||
| Grand Prix Warsaw 2016 (KLD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 245 | Allen, James [ENG] 2 (1500) | Won 2-0 | +181518 |
| 2standard | 162 | Mori, Roger (1431) | Lost 1-2 | -201498 |
| 3standard | 404 | Erenyi, Jakub (1735) | Lost 1-2 | -131485 |
| 4standard | 447 | Berger, Maximilien (1644) | Won 2-1 | +211506 |
| 5standard | 429 | Oria, Antoine (1148) | Won 2-0 | +111517 |
| 6standard | 255 | Obraz, Jiri (1641) | Lost 0-2 | -151502 |
| 7standard | 375 | Morsing, Mads (1595) | Lost 0-2 | -171485 |
| 8standard | 351 | Mstowski, Dariusz (1470) | Draw 1-1 | 01485 |
| 9standard | 346 | Seidl, Julius (1457) | Lost 1-2 | -191466 |
| top | average opponent: 1513record: 3-5-1 | new rating: 1466 | ||