| 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 | 1583 | 0.27153 | 0.00000 | -0.27153 |
| Derks | Marc | 1511 | 0.36354 | 0.00000 | -0.36354 | |||
| Eefting | Roel | 1484 | 0.40105 | 1.00000 | 0.59895 | |||
| Lommert | Peter | 1049 | 0.90505 | 1.00000 | 0.09495 | |||
| Keizer | Robin | 788 | 0.98436 | 1.00000 | 0.01564 | |||
| Beijsens | Robert | 463 | 0.99866 | 1.00000 | 0.00134 | |||
| Leudsen | 1998-10-01 | 0.000000 | Rinzema | Sander | 1567 | 0.29104 | 0.50000 | 0.20896 |
| Geertsma | Hans | 1381 | 0.54842 | 0.00000 | -0.54842 | |||
| Verleysdonk | Wim | 1246 | 0.72888 | 1.00000 | 0.27112 | |||
| Paffen | Ard | 982 | 0.93804 | 0.00000 | -0.93804 | |||
| Haar | Eric van de | 970 | 0.94310 | 0.00000 | -0.94310 | |||
| Leijten | Ben | 899 | 0.96507 | 0.50000 | -0.46507 | |||
| Smit | Joost de | 642 | 0.99474 | 1.00000 | 0.00526 | |||
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