The Opponent 1988 on netflix

Greene plays an up and coming boxer with a powerful right hand and a heart of gold. He works night shifts in a bar and has a girlfriend whose father played by Ernest Borgnine disapproves of the relationship thinking Greene is a no good for nothing loser. To prove himself Greene catches the attention of a local boxing promoter played by Giuliano Gemma who decides to make a champion out of his newfound protégé.