| Game Balance of Robbert van Opstal, sorted by Dates of Events | ||||||||
|---|---|---|---|---|---|---|---|---|
| Event | Opponent | Result | ||||||
| Place | Date ↑ | Significance | Surname | Prename | Rating | Expected | Observed | Net Yield |
| Groningen | 1999-04-10 | 0.000000 | Eefting | Roel | 1562 | 0.31505 | 1.00000 | 0.68495 |
| Helmus | René | 1545 | 0.33791 | 0.00000 | -0.33791 | |||
| Derks | Marc | 1521 | 0.36928 | 0.00000 | -0.36928 | |||
| Lommert | Peter | 1010 | 0.93221 | 1.00000 | 0.06779 | |||
| Keizer | Robin | 749 | 0.98944 | 1.00000 | 0.01056 | |||
| Beijsens | Robert | 420 | 0.99914 | 1.00000 | 0.00086 | |||
| Leudsen | 1998-10-01 | 0.000000 | Rinzema | Sander | 1517 | 0.37486 | 0.50000 | 0.12514 |
| Geertsma | Hans | 1339 | 0.62675 | 0.00000 | -0.62675 | |||
| Verleysdonk | Wim | 1210 | 0.78548 | 1.00000 | 0.21452 | |||
| Paffen | Ard | 954 | 0.95334 | 0.00000 | -0.95334 | |||
| Haar | Eric van de | 918 | 0.96388 | 0.00000 | -0.96388 | |||
| Leijten | Ben | 871 | 0.97406 | 0.50000 | -0.47406 | |||
| Smit | Joost de | 570 | 0.99728 | 1.00000 | 0.00272 | |||
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