| 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 | Helmus | René | 1602 | 0.27649 | 0.00000 | -0.27649 |
| Derks | Marc | 1535 | 0.36266 | 0.00000 | -0.36266 | |||
| Eefting | Roel | 1513 | 0.39262 | 1.00000 | 0.60738 | |||
| Lommert | Peter | 1056 | 0.91391 | 1.00000 | 0.08609 | |||
| Keizer | Robin | 801 | 0.98543 | 1.00000 | 0.01457 | |||
| Beijsens | Robert | 475 | 0.99876 | 1.00000 | 0.00124 | |||
| Leudsen | 1998-10-01 | 0.000000 | Rinzema | Sander | 1582 | 0.30043 | 0.50000 | 0.19957 |
| Geertsma | Hans | 1397 | 0.55775 | 0.00000 | -0.55775 | |||
| Verleysdonk | Wim | 1265 | 0.73235 | 1.00000 | 0.26765 | |||
| Paffen | Ard | 997 | 0.94123 | 0.00000 | -0.94123 | |||
| Haar | Eric van de | 973 | 0.94983 | 0.00000 | -0.94983 | |||
| Leijten | Ben | 913 | 0.96694 | 0.50000 | -0.46694 | |||
| Smit | Joost de | 648 | 0.99539 | 1.00000 | 0.00461 | |||
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