Grigull, Michael
Current rating: 1441
Record: 10-15
| Grand Prix Prague 2017 (AER limited) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 477 | Springer, Erik (1525) | Lost 0-2 | -171458 |
| 2sealed | 478 | Jirkal, Tomas (1489) | Lost 1-2 | -181440 |
| 3sealed | 944 | Rizahanov, Artur (1451) | Won 2-1 | +181458 |
| 4sealed | 828 | Lilek, Nenad (1485) | Lost 0-2 | -171441 |
| top | average opponent: 1487record: 1-3 | new rating: 1441 | ||
| Grand Prix Stockholm 2016 (EMN limited) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 264 | Rohman, Nicklas (1365) | Won 2-0 | +171455 |
| 2sealed | 111 | Langstrom, Johan (1538) | Won 2-0 | +191474 |
| 3sealed | 235 | Vuorela, Lauri (1777) | Won 2-1 | +241498 |
| 4sealed | 124 | Vaa Ytterstrom, Sebastian (1555) | Won 2-0 | +191517 |
| 5sealed | 2 | Poldsam, Ismo (1707) | Lost 1-2 | -151502 |
| 6sealed | 138 | Enevoldsen, Thomas (2001) | Lost 0-2 | -91493 |
| 7sealed | 156 | Watne, Hakon (1513) | Lost 0-2 | -181475 |
| 8sealed | 218 | Rosnes, Christian (1482) | Won 2-0 | +181493 |
| 9sealed | 222 | Wojno, Olivier (1474) | Lost 0-2 | -181475 |
| top | average opponent: 1601record: 5-4 | new rating: 1475 | ||
| Grand Prix Brussels 2015 (BFZ standard) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 471 | Van Caulaert, Eric (1500) | Lost 0-0 | -171412 |
| 2standard | 726 | Hansen, Andre (1530) | Lost 0-0 | -151397 |
| 3standard | 847 | Degelaen, Jerome (1467) | Won 2-0 | +191416 |
| 4standard | 765 | De Kooter, Geert (1399) | Won 2-1 | +181434 |
| 5standard | 526 | Oram, Dennis (1465) | Won 2-1 | +181452 |
| 6standard | 562 | Soumet, Arnaud (1675) | Lost 0-2 | -141438 |
| top | average opponent: 1506record: 3-3 | new rating: 1438 | ||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 293 | Salden, Koen (1591) | Lost 1-2 | -161484 |
| 2standard | 497 | Van Heel, Jeroen (1460) | Lost 0-2 | -191465 |
| 3standard | 696 | Kosa, Zoltan (1532) | Lost 1-2 | -171448 |
| 4standard | 721 | Tejeiro Sanchez, Francisco Jose (1371) | Won 2-0 | +171465 |
| 5standard | 654 | Schor, Michael (1473) | Lost 0-2 | -181447 |
| 6standard | 588 | Capesius, Willi (1446) | Lost 1-2 | -181429 |
| top | average opponent: 1479record: 1-5 | new rating: 1429 | ||