The man who shot and killed ex-NFL running back Joe McKnight back in December just pled not guilty to 2nd degree murder.
Ronald Gasser appeared in a Louisiana courtroom -- along with his mother and sister -- where he entered the plea.
Gasser has maintained he shot McKnight in self-defense in the middle of a road rage incident. Police have said there is video and witnesses which indicate the two were in a heated exchange before the shooting.
If convicted of 2nd degree murder, Gasser faces life in prison.
Gasser has been locked up in jail ever since he was charged on Dec.