Overzicht ontwikkeling ELO-rating voor Sjaak Ruigrok (startELO: 1668)
| Ronde | Tegenstander | Score | Elo | |
|---|---|---|---|---|
| 2 | Yunus Erdogan | ½ | 1667 | (- 1) |
| 3 | Paul Hoek | ½ | 1665 | (- 2) |
| 4 | Guus Gilein | ½ | 1663 | (- 2) |
| 5 | extern (1836) | 0 | 1657 | (- 6) |
| 6 | Fred van de Bent | 1 | 1664 | (+ 7) |
| 7 | Wilfried Binnendijk | 0 | 1660 | (- 4) |
| 8 | extern (1760) | 0 | 1654 | (- 6) |
| 10 | Yunus Erdogan | ½ | 1653 | (- 1) |
| 11 | Henk Sieders | ½ | 1650 | (- 3) |
| 12 | Rene Janssen | ½ | 1650 | (+ 0) |
| 13 | Guus Gilein | ½ | 1648 | (- 2) |
| 14 | extern (1708) | 1 | 1658 | (+ 10) |
| 15 | Davide Tomassini | 0 | 1651 | (- 7) |
| 16 | Joop Turk | 0 | 1638 | (- 13) |
| Huidige ELO: | 1638 |