| Rondenlijst van Jan Willem Koelmans | ||||||||
| Ronde | Datum | Tegenstander | Kleur | Score | Punten | WP | SB | Rating |
| 1 | 22-06-2019 | Hayun Shin | W | 1,0 | 1,0 | 6,0 | 6,00 | 1918 |
| 2 | 29-06-2019 | Jaco Arkesteijn | Z | 0,5 | 0,5 | 5,5 | 2,75 | 1912 |
| 3 | 06-07-2019 | Lars Vistisen | Z | 0,0 | 0,0 | 9,0 | 0,00 | 1907 |
| 4 | 13-07-2019 | Theo van Orsouw | W | 0,0 | 0,0 | 6,0 | 0,00 | 1897 |
| 5 | 20-07-2019 | Jinan Shin | Z | 1,0 | 1,0 | 3,0 | 3,00 | 1900 |
| 6 | 27-07-2019 | Reinhard Henn | W | 0,0 | 0,0 | 6,5 | 0,00 | 1888 |
| 7 | 03-08-2019 | Frans van Kampen | Z | 1,0 | 1,0 | 6,0 | 6,00 | 1890 |
| 8 | 10-08-2019 | Gerrit Horst | Z | 1,0 | 1,0 | 6,5 | 6,50 | 1893 |
| 9 | 17-08-2019 | Herman Arends | W | 0,0 | 0,0 | 6,5 | 0,00 | 1880 |
| 10 | 24-08-2019 | Lothar van der Sluijs | W | 0,0 | 0,0 | 6,5 | 0,00 | 1868 |
| 11 | 31-08-2019 | Niels Engelen | Z | 1,0 | 1,0 | 6,0 | 6,00 | 1870 |
| 12 | 07-09-2019 | Rein de Ruiter | Z | 1,0 | 1,0 | 5,5 | 5,50 | 1872 |
| 13 | 14-09-2019 | John van der Wiel | W | 0,0 | 0,0 | 13,0 | 0,00 | 1871 |
| Totaal | 6,5 | 86,0 | 35,75 | |||||