Janssen, Matthias
Current rating: 1427
Record: 16-23-2
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1426 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 49 | Pereira, Pedro 2 (1621) | Won 2-0 | +221448 |
| 2pioneer | 253 | Farin, Maximilien (1460) | Won 2-1 | +181466 |
| 3pioneer | 303 | Delafosse, Quentin (1532) | Won 2-1 | +191485 |
| 4pioneer | 187 | Stergiopoulos, Giorgos (1541) | Lost 0-2 | -171468 |
| 5pioneer | 306 | Navarro Marin, Hector (1745) | Lost 1-2 | -131455 |
| 6pioneer | 452 | Biasio, Stefano (1840) | Lost 0-2 | -111444 |
| 7pioneer | 425 | Moskov, Georgi (1507) | Lost 0-2 | -171427 |
| top | average opponent: 1606record: 3-4 | new rating: 1427 | ||
| Grand Prix Strasbourg 2019 (RNA limited) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 56 | Vicini, Stefano (1500) | Lost 0-2 | -171431 |
| 2sealed | 408 | Gies, Adrien (1482) | Won 2-1 | +191450 |
| 3sealed | 476 | Hoydonckx, Yves (1618) | Lost 0-2 | -151435 |
| 4sealed | 566 | Rentsch, Jari (2012) | Lost 1-2 | -91426 |
| top | average opponent: 1653record: 1-3 | new rating: 1426 | ||
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1408 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1088 | Rousseaux, Edouard (1446) | Lost 1-2 | -181390 |
| 2sealed | 1319 | Clemedtson, Christopher (1509) | Won 2-1 | +201410 |
| 3sealed | 1358 | Lapre, Bruno (1499) | Won 2-1 | +201430 |
| 4sealed | 1217 | De Forte, Fabio (1488) | Won 2-0 | +191449 |
| 5sealed | 1192 | Notting, Wander (1599) | Won 2-1 | +211470 |
| 6sealed | 1060 | Kaarls, Leonard (1587) | Lost 1-2 | -161454 |
| 7sealed | 1132 | Wielgorski, Daniel (1473) | Won 2-1 | +181472 |
| 8sealed | 1127 | Wiggett, Gregory (1885) | Lost 1-2 | -111461 |
| 9sealed | 1114 | Bastos, Frederico (1710) | Lost 1-2 | -131448 |
| top | average opponent: 1577record: 5-4 | new rating: 1448 | ||
| Grand Prix Bochum 2012 (RTR standard) | starting rating: 1440 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 48 | Martins, Didier (1565) | Lost 1-2 | -161424 |
| 2standard | 263 | Fienbork, Fabian (1518) | Lost 0-2 | -161408 |
| 3standard | 375 | Hubner, Norman (1363) | Won 2-1 | +171425 |
| 4standard | 333 | Graf, Michael (1476) | Lost 1-2 | -171408 |
| top | average opponent: 1481record: 1-3 | new rating: 1408 | ||
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 288 | Kupferschmied, Denny (1529) | Won 2-0 | +181556 |
| 2sealed | 20 | Rhode, Benjamin (1518) | Lost 1-2 | -191537 |
| 3sealed | 261 | Hunziker, Gerd (1576) | Lost 1-2 | -171520 |
| 4sealed | 305 | Duchesne, Koen (1537) | Lost 1-2 | -181502 |
| 5sealed | 322 | Altrogge, Christian (1465) | Draw 1-1 | 01502 |
| 6sealed | 270 | Claret, Albert (1448) | Lost 1-2 | -191483 |
| 7sealed | 208 | Knipping, Kai (1462) | Lost 0-2 | -191464 |
| 8sealed | 156 | Eucken, Christopher (1072) | Lost 0-2 | -241440 |
| top | average opponent: 1451record: 1-6-1 | new rating: 1440 | ||
| Grand Prix Brussels 2010 (WWK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 854 | Aristov, Boris (1457) | Won 2-1 | +171517 |
| 2standard | 702 | Pieters, Yorick (1544) | Won 2-1 | +191536 |
| 3standard | 614 | Timmins, Guillaume (1523) | Lost 1-2 | -191517 |
| 4standard | 802 | Oomen, Jasper (1489) | Draw 1-1 | 01517 |
| 5standard | 787 | Figlarz, Johan (1550) | Won 2-0 | +191536 |
| 6standard | 724 | Schraut, Andreas (1784) | Won 2-1 | +221558 |
| 7standard | 676 | Stevenson, Craig (1447) | Won 2-1 | +161574 |
| 8standard | 641 | Kelterbaum, Richard (1395) | Lost 0-2 | -211553 |
| 9standard | 683 | Orsini Jones, Matteo (1744) | Lost 0-2 | -151538 |
| top | average opponent: 1548record: 5-3-1 | new rating: 1538 | ||