Nick Carter's bar fighting partner may have had some experience before their Key West arrest -- he'll be charged with a felony for knocking a man unconscious in Dodger Stadium's parking lot.
The L.A. County D.A. announced Michael Papayans -- who's Carter's close friend -- will be charged next month for felony assault. The D.A. claims Papayans punched a man in the stadium parking lot in October, knocking him unconscious and causing serious head injuries.
Papayans was booked last month for misdemeanor battery after he and Carter allegedly fought a bouncer in Key West.
Papayans will be arraigned next month for the stadium fight.