Overview
Zurdo, is a 2003 Mexican fantasy adventure film, directed by Carlos Salces from the same company that produced Amores Perros.
Translated from Spanish, the title means "Lefty."
Storyline
The story is of a young boy called Lefty, a gifted marble player who lives in an urban housing complex. One day a stranger arrives claiming to know the best marble player in the world and challenges Lefty to a contest. The news sends the townspeople into a frenzy and they put all their hopes and dreams into their little hero winning much more than a simple game of marbles. With success well within his grasp, Lefty is faced with a dilemma when a corrupt local official comes along to sabotage his chances.
From Wikipedia (CC BY-SA 4.0).