Overzicht ontwikkeling ELO-rating voor Jack Heemskerk (startELO: 1652)
| Ronde | Tegenstander | Score | Elo | |
|---|---|---|---|---|
| 2 | Sjaak Ruigrok | ½ | 1653 | (+ 1) |
| 3 | Arjan Plug | ½ | 1657 | (+ 4) |
| 4 | Frank Hordijk | 1 | 1669 | (+ 12) |
| 5 | Rene Janssen | 0 | 1660 | (- 9) |
| 7 | Wilfried Binnendijk | ½ | 1663 | (+ 3) |
| 8 | extern (1645) | ½ | 1663 | (+ 0) |
| 9 | Guus Gilein | 0 | 1652 | (- 11) |
| 11 | Henk Sieders | ½ | 1650 | (- 2) |
| 12 | Anton Lindhout | ½ | 1649 | (- 1) |
| 13 | Joop Turk | 1 | 1660 | (+ 11) |
| 14 | extern (1634) | 0 | 1651 | (- 9) |
| 15 | Wilfried Binnendijk | ½ | 1654 | (+ 3) |
| 16 | Rene Janssen | 1 | 1665 | (+ 11) |
| Huidige ELO: | 1665 |