NYPD Internal Affairs is investigating the arrest of two NBA stars following the stabbing of former Knicks forward Chris Copeland and his fiancee. One of the two Atlanta Hawks players, Thabo Sefolosha, suffered a fractured tibia during an altercation with cops and will miss the remainder of the season. A video acquired by TMZ shows a police officer grabbing Sefolosha by the neck before at least six other cops wrestled him to the ground and cuffed him.