Joe Somebody (2001) on Netflix

On 'take your daughter to work' day, Joe Scheffer gets into an argument in the Car Park with the work bully, Mark McKinny. Mark hits Joe and embarrasses him in front of his Daughter and workmates. After falling into depression, unable to face his daughter, Joe figures that if he challenge and beat Mark McKinny in a fight, his dignity will be regained. From the day of the challenge to the day of the fight, Joe becomes very popular and learns various lessons that life can throw at him, which includes falling in love after his divorce. Being taught by a local Karate Sensai, and having the backing of the local community, Joe prepares for the fight in an attempt to go from zero to hero.