| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Mardell vs L Karlsson |
| 0-1 | 56 |
2005 |
XXXV Rilton Cup | B75 Sicilian, Dragon, Yugoslav Attack |
| 2. J Furhoff vs J Mardell |
| 1-0 | 30 |
2006 |
Rilton Cup | B77 Sicilian, Dragon, Yugoslav Attack |
| 3. V Nithander vs J Mardell |
| 1-0 | 57 |
2006 |
Rilton Cup | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 4. J Mardell vs C Berczes |
| 0-1 | 38 |
2006 |
XXXV Rilton Cup | B48 Sicilian, Taimanov Variation |
| 5. B Leer-Salvesen vs J Mardell |
 | 1-0 | 9 |
2007 |
Rilton Cup | A34 English, Symmetrical |
| 6. J Mardell vs S Djuric |
| 0-1 | 42 |
2007 |
Scandinavian Chess Tournament | C86 Ruy Lopez, Worrall Attack |
| 7. V Gagarin vs J Mardell |
| 1-0 | 29 |
2009 |
Rilton Cup | A57 Benko Gambit |
| 8. V Nithander vs J Mardell |
| 1-0 | 25 |
2009 |
Rilton Cup | B54 Sicilian |
| 9. L Karlsson vs J Mardell |
| 1-0 | 44 |
2009 |
Rilton Cup | A01 Nimzovich-Larsen Attack |
| 10. J Mardell vs A Kopasov |
| 0-1 | 35 |
2010 |
Rilton Cup | B29 Sicilian, Nimzovich-Rubinstein |
| 11. J Mardell vs I Agrest |
| 0-1 | 75 |
2010 |
Rilton Cup | C78 Ruy Lopez |
