| 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 | 1595 | 0.27557 | 0.00000 | -0.27557 |
| Derks | Marc | 1527 | 0.36341 | 0.00000 | -0.36341 | |||
| Eefting | Roel | 1503 | 0.39633 | 1.00000 | 0.60367 | |||
| Lommert | Peter | 1060 | 0.90712 | 1.00000 | 0.09288 | |||
| Keizer | Robin | 800 | 0.98466 | 1.00000 | 0.01534 | |||
| Beijsens | Robert | 473 | 0.99871 | 1.00000 | 0.00129 | |||
| Leudsen | 1998-10-01 | 0.000000 | Rinzema | Sander | 1579 | 0.29470 | 0.50000 | 0.20530 |
| Geertsma | Hans | 1394 | 0.55082 | 0.00000 | -0.55082 | |||
| Verleysdonk | Wim | 1258 | 0.73189 | 1.00000 | 0.26811 | |||
| Paffen | Ard | 991 | 0.94073 | 0.00000 | -0.94073 | |||
| Haar | Eric van de | 971 | 0.94793 | 0.00000 | -0.94793 | |||
| Leijten | Ben | 912 | 0.96538 | 0.50000 | -0.46538 | |||
| Smit | Joost de | 646 | 0.99516 | 1.00000 | 0.00484 | |||
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