Overzicht ontwikkeling ELO-rating voor Henk Sieders (startELO: 1571)
| Ronde | Tegenstander | Score | Elo | |
|---|---|---|---|---|
| 1 | Davide Tomassini | 0 | 1564 | (- 7) |
| 2 | Paul Hoek | ½ | 1565 | (+ 1) |
| 3 | Guus Gilein | 0 | 1555 | (- 10) |
| 4 | Fred van de Bent | ½ | 1554 | (- 1) |
| 5 | extern (1704) | 1 | 1568 | (+ 14) |
| 7 | Rene Janssen | 0 | 1561 | (- 7) |
| 8 | extern (1328) | 1 | 1564 | (+ 3) |
| 9 | Yunus Erdogan | 0 | 1556 | (- 8) |
| 10 | Piet Hein Admiraal | 1 | 1566 | (+ 10) |
| 11 | Sjaak Ruigrok | ½ | 1569 | (+ 3) |
| 12 | Frank Hordijk | 1 | 1582 | (+ 13) |
| 13 | Joop Turk | ½ | 1583 | (+ 1) |
| 14 | extern (1534) | ½ | 1584 | (+ 1) |
| 15 | Rene Janssen | 0 | 1575 | (- 9) |
| 16 | Jack Heemskerk | 1 | 1586 | (+ 11) |
| 17 | Fred van de Bent | 1 | 1594 | (+ 8) |
| Huidige ELO: | 1594 |