Complex sentence: His use of heroin and cocaine increased and his weight dropped as he would spend almost all of his free time using drugs, and at one point Marinovich severely cut his hand with a crack pipe during halftime and had to covertly bandage himself.
Split into simpler sentences: His use of heroin and cocaine increased and his weight dropped, as he would spend almost all of his free time using drugs. At one point Marinovich severely cut his hand with a crack pipe during halftime and had to covertly bandage himself.