| Rondenlijst van Jan van Leeuwen | ||||||
| Ronde | Datum | Tegenstander | Kleur | Score | Punten | Rating |
| 1 | 09-09-2025 | Arie de Groot | Z | 1,0 | 41,0 | 1412 |
| 2 | 16-09-2025 | Bram van Vliet | W | 1,0 | 45,0 | 1422 |
| 3 | 23-09-2025 | Kees van Rooijen | Z | 0,0 | 0,0 | 1412 |
| 4 | 30-09-2025 | Jan Haasnoot | Z | 0,0 | 0,0 | 1406 |
| 5 | 07-10-2025 | Hans Oosterbeek | W | 0,0 | 0,0 | 1396 |
| 6 | 14-10-2025 | Peter van Arnhem | W | 1,0 | 35,0 | 1399 |
| 7 | 21-10-2025 | Kock Versteeg | W | 0,5 | 23,5 | 1404 |
| 8 | 28-10-2025 | Kees Lugthart | W | 0,5 | 21,5 | 1405 |
| 9 | 04-11-2025 | oneven | 26,0 | |||
| 10 | 11-11-2025 | Peter Bakker | Z | 0,0 | 0,0 | 1395 |
| 11 | 18-11-2025 | Jan Haasnoot | W | 0,5 | 24,0 | 1399 |
| 12 | 25-11-2025 | Nico Warner | Z | 1,0 | 42,0 | 1406 |
| 13 | 02-12-2025 | Bert Burggraaff | Z | 0,0 | 0,0 | 1405 |
| 14 | 09-12-2025 | Arie de Groot | W | 0,5 | 20,5 | 1402 |
| 15 | 16-12-2025 | Kock Versteeg | Z | 0,0 | 0,0 | 1397 |
| 16 | 23-12-2025 | Kees van Rooijen | W | 0,5 | 22,0 | 1398 |
| 17 | 06-01-2026 | Barbara Mandok | Z | 1,0 | 34,0 | 1399 |
| 18 | 13-01-2026 | Kees Lugthart | Z | 0,0 | 0,0 | 1390 |
| 19 | 20-01-2026 | Eduard Baas | W | 1,0 | 36,0 | 1395 |
| 20 | 27-01-2026 | Bram van Vliet | Z | 0,0 | 0,0 | 1386 |
| 21 | 03-02-2026 | Jan Haasnoot | Z | 0,0 | 0,0 | 1380 |
| 22 | 10-02-2026 | Ruud Sneller | W | 0,0 | 0,0 | 1364 |
| 23 | 17-02-2026 | Peter van Arnhem | Z | 1,0 | 35,0 | 1367 |
| 24 | 24-02-2026 | Nico Warner | W | 0,0 | 0,0 | 1355 |
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| Startwaarde | 0,0 | |||||
| Totaal | 405,5 | |||||