| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J Lammi vs R Norinkeviciute |
| 1-0 | 56 | 2011 | European Club Cup | A02 Bird's Opening |
| 27. R Adamcik vs J Lammi |
| 0-1 | 66 | 2011 | European Club Cup | E60 King's Indian Defense |
| 28. O Sepp vs J Lammi |
  | 1-0 | 23 | 2012 | 21st Keres Memorial | A41 Queen's Pawn Game (with ...d6) |
| 29. J Lammi vs L Webb |
| 0-1 | 40 | 2015 | European Club Cup | A46 Queen's Pawn Game |
| 30. M Parry vs J Lammi |
| 0-1 | 34 | 2015 | European Club Cup | D04 Queen's Pawn Game |
| 31. J Lammi vs R G Iagar |
| ½-½ | 25 | 2015 | European Club Cup | D14 Queen's Gambit Declined Slav, Exchange Variation |
| 32. J Lammi vs C Egan |
| ½-½ | 73 | 2015 | European Club Cup | A03 Bird's Opening |
| 33. J Lammi vs L Takacs |
| 0-1 | 46 | 2018 | European Club Cup | A01 Nimzovich-Larsen Attack |
| 34. S Lomasov vs J Lammi |
| 1-0 | 26 | 2018 | European Club Cup | C27 Vienna Game |
| 35. J Lammi vs E Ejsing |
| 0-1 | 39 | 2018 | European Club Cup | A48 King's Indian |
| 36. Michael Schwerteck vs J Lammi |
| 0-1 | 61 | 2018 | European Club Cup | C04 French, Tarrasch, Guimard Main line |
| 37. J Lammi vs A Hill |
| 0-1 | 41 | 2018 | European Club Cup | A73 Benoni, Classical, 9.O-O |
Kibitzing
