Vallinam (English: Hardness) is a 2014 Tamil sports drama film written and directed by Arivazhagan and produced by Aascar Ravichandran. The film features Nakul and newcomer Mrudhula Basker in the lead roles. Vallinam opened to positive reviews from critics and audiences.
The film starts with Krishna (Nakul) and Shiva (Kreshna). They are childhood friends studying in the same college and they are prominent basketball players preparing for a national-level basketball tournament.
Following the events of the college, Shiva dies due to heart attack because he was hit by a basketball shot by Krishna. This makes Krishna end his college career. He then joins a new college where a basketball game is teased by a cricket team there. The story lines up when Krishna takes on basketball again and wins the national-level tournament.