| 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 | 1565 | 0.31162 | 1.00000 | 0.68838 |
| Helmus | René | 1543 | 0.34085 | 0.00000 | -0.34085 | |||
| Derks | Marc | 1522 | 0.36919 | 0.00000 | -0.36919 | |||
| Lommert | Peter | 1008 | 0.93328 | 1.00000 | 0.06672 | |||
| Keizer | Robin | 747 | 0.98963 | 1.00000 | 0.01037 | |||
| Beijsens | Robert | 416 | 0.99916 | 1.00000 | 0.00084 | |||
| Leudsen | 1998-10-01 | 0.000000 | Rinzema | Sander | 1515 | 0.37796 | 0.50000 | 0.12204 |
| Geertsma | Hans | 1337 | 0.63060 | 0.00000 | -0.63060 | |||
| Verleysdonk | Wim | 1202 | 0.79380 | 1.00000 | 0.20620 | |||
| Paffen | Ard | 951 | 0.95440 | 0.00000 | -0.95440 | |||
| Haar | Eric van de | 915 | 0.96463 | 0.00000 | -0.96463 | |||
| Leijten | Ben | 868 | 0.97463 | 0.50000 | -0.47463 | |||
| Smit | Joost de | 565 | 0.99738 | 1.00000 | 0.00262 | |||
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