Grolms, Marcus
Current rating: 1489
Record: 3-4-2
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1366 | Stam, Erik (1500) | Won 2-0 | +181501 |
| 2sealed | 1144 | Muller, Tobias (1534) | Won 2-0 | +191520 |
| 3sealed | 1205 | Norgaard, Lasse (1799) | Lost 1-2 | -131507 |
| 4sealed | 1194 | Lutter, Maximilian (1519) | Draw 1-1 | 01507 |
| 5sealed | 1236 | Harmsen, Jeroen (1516) | Lost 0-2 | -181489 |
| average opponent: 1573record: 2-2-1 | new rating: 1489 | |||
| Grand Prix Paris 2014 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 363 | Jevtic, Nicolas (1500) | Draw 1-1 | 01500 |
| 2legacy | 342 | Puype, Jeffrey (1472) | Lost 0-2 | -191481 |
| 3legacy | 644 | Pombo, Goncalo (1497) | Won 2-1 | +191500 |
| 4legacy | 513 | Kellock, Thomas (1566) | Lost 0-2 | -171483 |
| average opponent: 1509record: 1-2-1 | new rating: 1483 | |||