| Rondenlijst van Ferdi Sieben | ||||||||
| Ronde | Datum | Tegenstander | Kleur | Score | Punten | WP | SB | Rating |
| 1 | 21-09-2018 | Erik Middelkoop | W | 0,5 | 0,5 | 20,5 | 10,25 | 1607 |
| 2 | 12-09-2018 | Piet Hanemaaijer | Z | 1,0 | 1,0 | 11,0 | 11,00 | 1612 |
| 3 | 26-09-2018 | Merlijn Albers | W | 0,0 | 0,0 | 18,5 | 0,00 | 1600 |
| 4 | 04-10-2018 | Marc Verheugd | Z | 1,0 | 1,0 | 15,5 | 15,50 | 1610 |
| 5 | 10-10-2018 | Bob Ameling | Z | 0,5 | 0,5 | 16,0 | 8,00 | 1611 |
| 6 | 17-10-2018 | Gerard Arp | W | 1,0 | 1,0 | 15,0 | 15,00 | 1620 |
| 7 | 01-11-2018 | Eugene Sigal | Z | 0,0 | 0,0 | 15,0 | 0,00 | 1607 |
| 8 | 08-11-2018 | Alfons Termaat | Z | 0,5 | 0,5 | 14,5 | 7,25 | 1607 |
| 9 | 08-11-2018 | afgezegd | 0,0 | 17,5 | 0,00 | |||
| 10 | 22-11-2018 | Husham Al Sam | Z | 1,0 | 1,0 | 13,5 | 13,50 | 1616 |
| 11 | 29-11-2018 | Piet Hanemaaijer | W | 1,0 | 1,0 | 11,0 | 11,00 | 1621 |
| 12 | 06-12-2018 | Marc Verheugd | W | 1,0 | 1,0 | 15,5 | 15,50 | 1630 |
| 13 | 13-12-2018 | Ton Morcus | Z | 0,5 | 0,5 | 20,5 | 10,25 | 1636 |
| 14 | 20-12-2018 | Arno Middelkoop | Z | 0,0 | 0,0 | 20,0 | 0,00 | 1631 |
| 15 | 27-12-2018 | Arie Franke | W | 1,0 | 1,0 | 12,5 | 12,50 | 1640 |
| 16 | 03-01-2019 | Eugene Sigal | W | 1,0 | 1,0 | 15,0 | 15,00 | 1647 |
| 17 | 10-01-2019 | afgezegd | 0,0 | 19,0 | 0,00 | |||
| 18 | 17-01-2019 | Wilco Kort | W | 0,0 | 0,0 | 17,5 | 0,00 | 1640 |
| 19 | 24-01-2019 | Wilco Kort | Z | 0,5 | 0,5 | 17,5 | 8,75 | 1644 |
| 20 | 31-01-2019 | Lucas Albers | Z | 1,0 | 1,0 | 16,5 | 16,50 | 1653 |
| 21 | 07-02-2019 | Bob Ameling | W | 0,0 | 0,0 | 16,0 | 0,00 | 1643 |
| 22 | 14-02-2019 | afgezegd | 0,0 | 18,0 | 0,00 | |||
| 23 | 21-02-2019 | afgezegd | 0,0 | 17,5 | 0,00 | |||
| 24 | 28-02-2019 | Dirk Brinkman | W | 1,0 | 1,0 | 12,5 | 12,50 | 1654 |
| 25 | 07-03-2019 | Davin Mostert | W | 0,0 | 0,0 | 18,5 | 0,00 | 1648 |
| 26 | 14-03-2019 | afgezegd | 0,0 | 17,0 | 0,00 | |||
| 27 | 21-03-2019 | afgezegd | 0,0 | 16,5 | 0,00 | |||
| 28 | 28-03-2019 | extern | W | 1,0 | 1,0 | 15,0 | 15,00 | |
| 29 | 04-04-2019 | Julian Oskam | W | 1,0 | 1,0 | 9,5 | 9,50 | 1657 |
| 30 | 11-04-2019 | Han Perluka | Z | 0,5 | 0,5 | 18,5 | 9,25 | 1656 |
| 31 | 18-04-2019 | Bob Ameling | Z | 0,5 | 0,5 | 16,0 | 8,00 | 1656 |
| 32 | 25-04-2019 | Jo Lipka | Z | 0,5 | 0,5 | 21,5 | 10,75 | 1656 |
| 33 | 02-05-2019 | Marc Verheugd | W | 1,0 | 1,0 | 15,5 | 15,50 | 1665 |
| Totaal | 17,0 | 534,0 | 250,50 | |||||