| Johansson, U2125 | 1-0 | Hafthorsson, Jon Ulfur1873 | Jonkoping Open 2025 | 2025 |
| Harila, P1961 | ½-½ | Hafthorsson, Jon Ulfur1873 | Jonkoping Open 2025 | 2025 |
| Hafthorsson, Jon Ulfur1873 | 1-0 | Kullander, Sol1701 | Jonkoping Open 2025 | 2025 |
| Zakrzewicz, Kacper1682 | ½-½ | Hafthorsson, Jon Ulfur1873 | Jonkoping Open 2025 | 2025 |
| Berggren Torell, Harald2067 | 1-0 | Hafthorsson, Jon Ulfur1873 | Jonkoping Open 2025 | 2025 |
| Hafthorsson, Jon Ulfur1873 | 0-1 | Josse, Mar2110 | Jonkoping Open 2025 | 2025 |
| Hafthorsson, Jon Ulfur1873 | 1-0 | Nielsen, Pet1775 | Jonkoping Open 2025 | 2025 |
| Miskulin, D2076 | ½-½ | Hafthorsson, Jon Ulfur1873 | Jonkoping Open 2025 | 2025 |
| Santoro, Michele1649 | ½-½ | Hafthorsson, Jon Ulfur1872 | Reykjavik Open 2025 | 2025 |
| Hafthorsson, Jon Ulfur1872 | ½-½ | Le Pen, M1668 | Reykjavik Open 2025 | 2025 |
| Bjarkason, Halldor Palmi | 1-0 | Hafthorsson, Jon Ulfur1872 | Reykjavik Open 2025 | 2025 |
| Hafthorsson, Jon Ulfur1872 | 0-1 | Le Pen, S2125 | Reykjavik Open 2025 | 2025 |
| Schellenpfeil, W2079 | ½-½ | Hafthorsson, Jon Ulfur1872 | Reykjavik Open 2025 | 2025 |
| Hafthorsson, Jon Ulfur1872 | 0-1 | Beisteiner, Joachim2097 | Reykjavik Open 2025 | 2025 |
| Liu, Meng2079 | 0-1 | Hafthorsson, Jon Ulfur1872 | Reykjavik Open 2025 | 2025 |