| 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 | 1569 | 0.31232 | 1.00000 | 0.68768 |
| Helmus | René | 1550 | 0.33725 | 0.00000 | -0.33725 | |||
| Derks | Marc | 1526 | 0.36974 | 0.00000 | -0.36974 | |||
| Lommert | Peter | 999 | 0.93899 | 1.00000 | 0.06101 | |||
| Keizer | Robin | 751 | 0.98969 | 1.00000 | 0.01031 | |||
| Beijsens | Robert | 413 | 0.99921 | 1.00000 | 0.00079 | |||
| Leudsen | 1998-10-01 | 0.000000 | Rinzema | Sander | 1511 | 0.38957 | 0.50000 | 0.11043 |
| Geertsma | Hans | 1327 | 0.64924 | 0.00000 | -0.64924 | |||
| Verleysdonk | Wim | 1197 | 0.80297 | 1.00000 | 0.19703 | |||
| Paffen | Ard | 950 | 0.95630 | 0.00000 | -0.95630 | |||
| Haar | Eric van de | 913 | 0.96616 | 0.00000 | -0.96616 | |||
| Leijten | Ben | 861 | 0.97664 | 0.50000 | -0.47664 | |||
| Smit | Joost de | 566 | 0.99746 | 1.00000 | 0.00254 | |||
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