Grotenhuis, Thomas
Current rating: 1714 (#5636)
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1702 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 800 | Scotto, Agostino (1518) | Won 2-0 | +151717 |
| 3legacy | 615 | Bos, Arjan (1534) | Lost 0-2 | -211696 |
| 4legacy | 755 | Andersson, Christopher (1516) | Won 2-0 | +151711 |
| 5legacy | 739 | Van Straalen, Roeland (1511) | Lost 0-2 | -221689 |
| 6legacy | 770 | Brouty, Fabien (1514) | Lost 1-2 | -211668 |
| 7legacy | 866 | Post, Dallas (1582) | Won 2-0 | +161684 |
| 8legacy | 750 | Steinke, Michael (1519) | Won 2-0 | +151699 |
| 9legacy | 708 | Lenaerts, Mathi (1542) | Won 2-1 | +151714 |
| top | average opponent: 1530record: 5-3 | new rating: 1714 | ||
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1653 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 7 | Bosselmann, Tobias (1644) | Lost 1-2 | -181635 |
| 3sealed | 165 | Muller, Andreas (2090) | Won 2-0 | +261661 |
| 4sealed | 254 | Mrozek, Michal (1517) | Won 2-1 | +151676 |
| 5sealed | 158 | Hansen, Andre (1552) | Lost 0-2 | -201656 |
| 6sealed | 186 | Peeters, Heikki (1455) | Won 2-1 | +141670 |
| 7sealed | 83 | Mack, Alex (1796) | Won 2-1 | +211691 |
| 8sealed | 88 | Sommen, Pierre (1606) | Won 2-0 | +161707 |
| 9sealed | 62 | Saul, Philip (1424) | Won 2-1 | +131720 |
| 10sealed | 46 | Van Goethem, Stijn (1743) | Lost 0-2 | -181702 |
| top | average opponent: 1647record: 6-3 | new rating: 1702 | ||
| Grand Prix Madrid 2010 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 904 | Torres Castello, David (1500) | Won 2-1 | +181518 |
| 2legacy | 783 | Galilea Ruiz, Victor (1518) | Lost 0-2 | -181500 |
| 3legacy | 1046 | Olea Garcia, Alejandro (1500) | Won 2-0 | +181518 |
| 4legacy | 992 | Sanchez Navarro, Jose (1516) | Won 2-1 | +181536 |
| 5legacy | 833 | Luzan, Enric (1458) | Won 2-1 | +171553 |
| 6legacy | 830 | Milia, Marcel (1540) | Won 2-1 | +171570 |
| 7legacy | 772 | Magdalena Aguin, Eduardo (1571) | Won 2-1 | +181588 |
| 8legacy | 756 | Black, Samuel (1746) | Won 2-0 | +211609 |
| 9legacy | 766 | Chailloux, Andre (1609) | Won 2-0 | +181627 |
| 10legacy | 6 | Waard, Guus De (1624) | Won 2-0 | +181645 |
| 11legacy | 10 | Scalia, Alessandro (1682) | Won 2-0 | +191664 |
| 12legacy | 5 | Bland, Richard (1799) | Lost 0-2 | -161648 |
| 13legacy | 13 | Sanchez, Ernest (1627) | Won 2-0 | +181666 |
| 14legacy | 22 | Baauw, Dennis (1671) | Draw 0-0 | 01666 |
| 15legacy | 19 | Restoy, Lluis (1693) | Lost 0-2 | -181648 |
| 16legacy | 32 | Sanchez, Eugeni (1892) | Won 2-1 | +231671 |
| 17legacy | 26 | Perez, Sergio (1687) | Lost 1-2 | -181653 |
| top | average opponent: 1626record: 12-4-1 | new rating: 1653 | ||