| 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 | 1603 | 0.27712 | 0.00000 | -0.27712 |
| Derks | Marc | 1537 | 0.36218 | 0.00000 | -0.36218 | |||
| Eefting | Roel | 1515 | 0.39229 | 1.00000 | 0.60771 | |||
| Lommert | Peter | 1056 | 0.91457 | 1.00000 | 0.08543 | |||
| Keizer | Robin | 802 | 0.98550 | 1.00000 | 0.01450 | |||
| Beijsens | Robert | 476 | 0.99877 | 1.00000 | 0.00123 | |||
| Leudsen | 1998-10-01 | 0.000000 | Rinzema | Sander | 1583 | 0.30166 | 0.50000 | 0.19834 |
| Geertsma | Hans | 1398 | 0.55858 | 0.00000 | -0.55858 | |||
| Verleysdonk | Wim | 1266 | 0.73322 | 1.00000 | 0.26678 | |||
| Paffen | Ard | 998 | 0.94143 | 0.00000 | -0.94143 | |||
| Haar | Eric van de | 972 | 0.95085 | 0.00000 | -0.95085 | |||
| Leijten | Ben | 914 | 0.96716 | 0.50000 | -0.46716 | |||
| Smit | Joost de | 646 | 0.99550 | 1.00000 | 0.00450 | |||
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