▁but ▁gets ▁knock ed ▁down ▁several ▁times ▁in ▁the ▁second ▁and ▁the ▁ref eree ▁calls ▁for ▁a ▁technical ▁knock out . ▁While ▁Elis ▁is ▁disappoint ed , ▁Ol li ▁seems ▁to ▁be ▁at ▁peace ▁with ▁the ▁loss , ▁and ▁quietly ▁wal ks ▁away ▁from ▁the ▁post - match ▁dinner ▁with ▁Ra ija . ▁ ▁Cast ▁ ▁J ark ko ▁La ht i ▁as ▁Ol li ▁M ä ki ▁ ▁O ona ▁A iro la ▁as ▁Ra ija ▁J än k ä ▁ ▁E ero ▁M ilon off ▁as ▁Elis ▁Ask ▁ ▁John ▁Bos co ▁Jr . ▁as ▁Dave y ▁Moore ▁ ▁The ▁real ▁Ol li ▁and ▁Ra ija ▁M ä ki ▁appear ▁briefly ▁at ▁the ▁very ▁end ▁of ▁the ▁film , ▁as ▁Ra ija ▁looks ▁at ▁them ▁and ▁asks ▁Ol li ▁" Do ▁you ▁think ▁we ' ll ▁be ▁like ▁them ▁when ▁we ' re ▁old ?" ▁ ▁Production ▁The ▁H app iest ▁Day ▁in ▁the ▁Life ▁of ▁Ol li ▁M ä ki ▁was ▁the ▁feature - length ▁debut ▁of ▁director ▁Ju ho ▁Ku os man en , ▁who ▁had ▁previously ▁directed ▁short ▁films ▁as ▁well ▁as ▁theatre ▁and ▁opera ▁produ ctions . ▁ ▁The ▁film ▁was ▁shot ▁on ▁location , ▁mostly ▁in ▁Hels ink i . ▁To ▁achieve ▁the ▁ 1 9 6 0 s ▁look , ▁Ku os man en ▁and ▁cinemat ograph er ▁Jan i - P etter i ▁Pass i ▁decided ▁to ▁film ▁on ▁ 1 6 mm ▁K od ak ▁Tri - X ▁black ▁and ▁white ▁film ▁stock