Grohmann, Jonas
Current rating: 1576
Record: 15-11-1
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 509 | Houthuijsen, Jasper (1537) | Won 2-0 | +181531 |
| 2sealed | 14 | Venancio, Ricardo (1631) | Won 2-1 | +201551 |
| 3sealed | 239 | Rabionet Janssen, Raul (1728) | Lost 1-2 | -151536 |
| 4sealed | 212 | Pidutti, Paolo (1481) | Won 2-0 | +171553 |
| 5sealed | 190 | Groes, Philip (1543) | Won 2-1 | +181571 |
| 6sealed | 111 | Habert, Alexandre (1745) | Won 2-1 | +211592 |
| 7sealed | 54 | Van Gool, Goffert (1551) | Lost 0-2 | -191573 |
| 8sealed | 88 | Pispa, Lauri (1581) | Won 2-1 | +191592 |
| 9sealed | 85 | Engelberg, Lars Jorgen (1706) | Lost 1-2 | -161576 |
| top | average opponent: 1611record: 6-3 | new rating: 1576 | ||
| Grand Prix Bochum 2012 (RTR standard) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 590 | Villamil, Erwin Rommel (1500) | Won 2-1 | +171549 |
| 2standard | 520 | Sebela, Antonin (1518) | Lost 1-2 | -181531 |
| 3standard | 725 | Brenner, Martin (1587) | Lost 0-2 | -171514 |
| 4standard | 808 | Keenan, Cecilie (1410) | Won 2-0 | +161530 |
| 5standard | 773 | Schmidt, Arthur (1578) | Lost 1-2 | -171513 |
| top | average opponent: 1519record: 2-3 | new rating: 1513 | ||
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 46 | Plaul, Marco (1500) | Won 2-0 | +171535 |
| 2sealed | 48 | Rospir, Edu (1518) | Won 2-0 | +181553 |
| 3sealed | 104 | Zelgert, Kai (1444) | Lost 1-2 | -201533 |
| 4sealed | 198 | Liu, Jeff (1577) | Won 2-1 | +191552 |
| 5sealed | 170 | Caekebeke, Evert (1489) | Lost 1-2 | -191533 |
| 6sealed | 158 | Doll, Karlos (1532) | Won 2-0 | +181551 |
| 7sealed | 126 | Schepker, Henning F (1503) | Lost 0-2 | -191532 |
| top | average opponent: 1509record: 4-3 | new rating: 1532 | ||
| Grand Prix Stuttgart 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 20 | Weber, Alexander (1500) | Draw 1-1 | 01500 |
| 2sealed | 181 | Bugnon, Vincent (1500) | Won 2-0 | +181518 |
| 3sealed | 113 | Cattrysse, Sabbe (1570) | Lost 1-2 | -171501 |
| 4sealed | 216 | Sinner, Denis (1484) | Won 2-1 | +181519 |
| 5sealed | 151 | Devaux, Fabrice (1516) | Won 2-0 | +181537 |
| 6sealed | 99 | Schmidt, Jonathan [DEU] (1488) | Lost 1-2 | -191518 |
| top | average opponent: 1510record: 3-2-1 | new rating: 1518 | ||