| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Westerberg vs H Tikkanen |
| 0-1 | 31 | 2011 | ch-SWE Master Elite | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 2. J Westerberg vs B Lindberg |
| 0-1 | 22 | 2011 | ch-SWE Master Elite | A70 Benoni, Classical with 7.Nf3 |
| 3. P Cramling vs J Westerberg |
 | 1-0 | 66 | 2011 | ch-SWE Master Elite | E12 Queen's Indian |
| 4. J Aperia vs J Westerberg |
| ½-½ | 38 | 2011 | Rilton Cup 2011/12 | A20 English |
| 5. J Westerberg vs J Olund |
| 1-0 | 16 | 2011 | Rilton Cup 2011/12 | A48 King's Indian |
| 6. S Ivanov vs J Westerberg |
| 1-0 | 17 | 2011 | Rilton Cup 2011/12 | E15 Queen's Indian |
| 7. J Westerberg vs G Johansson |
| 1-0 | 31 | 2011 | Rilton Cup 2011/12 | B48 Sicilian, Taimanov Variation |
| 8. L Johansson vs J Westerberg |
| ½-½ | 30 | 2012 | Rilton Cup 2011/12 | A40 Queen's Pawn Game |
| 9. J Westerberg vs V Nithander |
| 0-1 | 39 | 2012 | Rilton Cup 2011/12 | E76 King's Indian, Four Pawns Attack |
| 10. O Von Bahr vs J Westerberg |
| ½-½ | 45 | 2012 | Rilton Cup 2011/12 | A20 English |
| 11. J Westerberg vs P Villegas |
| 1-0 | 78 | 2012 | Rilton Cup 2011/12 | B18 Caro-Kann, Classical |
| 12. A Smith vs J Westerberg |
| 1-0 | 33 | 2012 | Rilton Cup 2011/12 | A84 Dutch |
| 13. J Westerberg vs K Janzekovic |
| 1-0 | 41 | 2012 | World Youth Championship | C45 Scotch Game |
| 14. K Grigoryan vs J Westerberg |
| 1-0 | 41 | 2012 | World Youth Championship | A96 Dutch, Classical Variation |
| 15. J Westerberg vs R Klabis |
| 1-0 | 28 | 2012 | World Youth Championship | A52 Budapest Gambit |
| 16. V Oltian vs J Westerberg |
| 0-1 | 79 | 2012 | World Youth Championship | C04 French, Tarrasch, Guimard Main line |
| 17. J Westerberg vs D Kadric |
| ½-½ | 45 | 2012 | World Youth Championship | B07 Pirc |
| 18. V Fedoseev vs J Westerberg |
 | 1-0 | 20 | 2012 | World Youth Championship | C04 French, Tarrasch, Guimard Main line |
| 19. J Westerberg vs M Iskandarov |
| 0-1 | 68 | 2012 | World Youth Championship | A45 Queen's Pawn Game |
| 20. N Navalgund vs J Westerberg |
| ½-½ | 54 | 2012 | World Youth Championship | A96 Dutch, Classical Variation |
| 21. J Westerberg vs P Patil |
| 1-0 | 33 | 2012 | World Youth Championship | B23 Sicilian, Closed |
| 22. B P Jovanovic vs J Westerberg |
| 0-1 | 26 | 2012 | World Youth Championship | E10 Queen's Pawn Game |
| 23. A Predke vs J Westerberg |
| 1-0 | 58 | 2012 | World Youth Championship | B45 Sicilian, Taimanov |
| 24. J Westerberg vs J Aira |
| 1-0 | 46 | 2012 | Rilton Cup 2012/13 | D35 Queen's Gambit Declined |
| 25. Krasenkow vs J Westerberg |
| 1-0 | 30 | 2012 | Rilton Cup 2012/13 | E10 Queen's Pawn Game |
Kibitzing
