Short and skinny (please correct me if I'm wrong):
Gang banger growing up
Good at football
Got into some trouble (shootings) in college, sports being the pinnacle of ethics they are, covered up
Comes to the Pats
Get's "diss'ed" at a night club by people not affiliated with the correct set
Shoots them in a driveby
Couple years later... Buddy is talking to some people he doesn't like.
Paranoid he is ratting about the above shooting
executes him down the street from his house.
Destroys a bunch of evidence and is generally just a total scumbag about it.