หมัดเดียวเปลี่ยนชีวิต Knockout (2011) ซับเวียดนาม

Outsider and new kid Matthew desperately wants to join his high school's boxing team, but resident bully and boxing champion Hector stands in his way. Facing constant torment, Matthew finds an unlikely ally in Dan, the school's janitor and one-time amateur boxer. Together, they train for the biggest boxing match of Matthew's life and discover what it truly means to be a winner.