2 Birds with 1 Stallone

• 2002 drama
• Plot: Lou Benedetti, a world-class boxer, loves people, but he can speak without a stutter only when he's inviting violent confrontation into his life. When a head injury robs Lou of his boxing license, his only hope at a future is as a trainer for the upcoming Golden Gloves. He has two weeks to lose his stutter and overcome a lifetime of sociopathic behavior.
• IMDb link