| 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 | 1549 | 0.25559 | 0.00000 | -0.25559 |
| Derks | Marc | 1477 | 0.34499 | 0.00000 | -0.34499 | |||
| Eefting | Roel | 1404 | 0.44612 | 1.00000 | 0.55388 | |||
| Lommert | Peter | 995 | 0.90815 | 1.00000 | 0.09185 | |||
| Keizer | Robin | 758 | 0.98207 | 1.00000 | 0.01793 | |||
| Beijsens | Robert | 414 | 0.99867 | 1.00000 | 0.00133 | |||
| Leudsen | 1998-10-01 | 0.000000 | Leijten | Ben | 2307 | 0.00146 | 0.50000 | 0.49854 |
| Rinzema | Sander | 1505 | 0.30815 | 0.50000 | 0.19185 | |||
| Geertsma | Hans | 1262 | 0.64737 | 0.00000 | -0.64737 | |||
| Verleysdonk | Wim | 1193 | 0.73412 | 1.00000 | 0.26588 | |||
| Paffen | Ard | 990 | 0.91114 | 0.00000 | -0.91114 | |||
| Haar | Eric van de | 904 | 0.94942 | 0.00000 | -0.94942 | |||
| Smit | Joost de | 557 | 0.99603 | 1.00000 | 0.00397 | |||
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