Groen, Jeroen
Current rating: 1478
Record: 5-7
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1095 | Ben-Amara, Roee (1500) | Won 2-0 | +191468 |
| 2sealed | 1215 | Rogachevsky, Victor (1615) | Lost 0-2 | -151453 |
| 3sealed | 1371 | Pathuis, Thomas (1503) | Won 2-0 | +181471 |
| 4sealed | 1304 | Rodrigues, Thiago (1654) | Won 2-0 | +221493 |
| 5sealed | 1066 | Samra, Baljeet (1452) | Won 2-1 | +171510 |
| 6sealed | 1112 | Veldhuizen, Martin (1487) | Lost 1-2 | -181492 |
| 7sealed | 1183 | Benaets, Kristof (1749) | Lost 0-2 | -141478 |
| average opponent: 1566record: 4-3 | new rating: 1478 | |||
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 821 | Richter, Niels (1668) | Lost 1-2 | -151485 |
| 2legacy | 886 | Vermaas, Rob J (1482) | Won 2-0 | +181503 |
| 3legacy | 775 | De Blecourt, Alex (1498) | Lost 0-2 | -181485 |
| 4legacy | 964 | Boulay, Antoine (1483) | Lost 1-2 | -181467 |
| 5legacy | 971 | Simon, Jonathan (1469) | Lost 1-2 | -181449 |
| average opponent: 1520record: 1-4 | new rating: 1449 | |||