Overzicht ontwikkeling ELO-rating voor Jan Elfrink (startELO: 1732)
| Ronde | Tegenstander | Score | Elo | |
|---|---|---|---|---|
| 1 | John Legierse | 1 | 1734 | (+ 2) |
| 3 | Peter Teunissen | ½ | 1733 | (- 1) |
| 4 | Matheus Janssen | 0 | 1722 | (- 11) |
| 5 | Ron Berendsen | ½ | 1723 | (+ 1) |
| 6 | extern (1652) | 1 | 1735 | (+ 12) |
| 7 | Marcel Groen | 1 | 1749 | (+ 14) |
| 8 | Jeroen Kersten | 1 | 1768 | (+ 19) |
| 9 | extern (1716) | ½ | 1766 | (- 2) |
| 10 | Piet de Mol | 0 | 1752 | (- 14) |
| 11 | Wim Groeneveld | 1 | 1754 | (+ 2) |
| 12 | John Legierse | 1 | 1755 | (+ 1) |
| 13 | extern (1600) | ½ | 1749 | (- 6) |
| 14 | Matheus Janssen | 0 | 1738 | (- 11) |
| 15 | extern (1764) | 0 | 1724 | (- 14) |
| 18 | Piet de Mol | 1 | 1744 | (+ 20) |
| - | extern (1785) | ½ | 1746 | (+ 2) |
| 19 | Wim Groeneveld | 1 | 1747 | (+ 1) |
| 20 | extern (1849) | 0 | 1736 | (- 11) |
| 21 | Marcel Groen | ½ | 1735 | (- 1) |
| 22 | Ron Berendsen | 0 | 1722 | (- 13) |
| 23 | extern (1868) | 0 | 1713 | (- 9) |
| 24 | Pieter van Zoest | 1 | 1718 | (+ 5) |
| 25 | Gerrie Arends | 1 | 1727 | (+ 9) |
| 26 | Fred Visschers | 1 | 1728 | (+ 1) |
| - | extern (1475) | 0 | 1704 | (- 24) |
| 28 | John Legierse | 1 | 1706 | (+ 2) |
| Huidige ELO: | 1706 |