Southpaw
Billy Hope is a champ and a fighter in his field. In the starting of the movie, he wins his fight in a bad condition.
After some days, he and his wife attend an event, and unfortunately, one man shoots his wife. His wife dies in front of him, and he can't do anything about it.
After this type of trauma, his mentality is totally unstable, and anger is his biggest weak point.
At that time, I only remember one character's name is Frank Castle (The Punisher), and he totally seems like Frank Castle when he is mentally unstable.
After some days of rest, he gets back to his field, and I feel happy for him when he at least wins the final fight. The director gives a happy ending and At the last moments when he hugs his child. 🎬