Complex sentence: He had brief stints with the New Jersey Nets, where he averaged 1.8 points, and the Denver Nuggets, where he played only 3 games then signed with the New York Knicks in the summer of 1991.
Split into simpler sentences: He had brief stints with the New Jersey Nets, where he averaged 1.8 points, and the Denver Nuggets, where he played only 3 games. Mason then signed with the New York Knicks in the summer of 1991.