Though he is considered undersized for a power forward at 6 feet 6 inches (1.98 m), Green is a versatile defender, capable of guarding all five positions as both an interior and perimeter defender.[1][132][133] Green studies opponents' habits, and leverages his preparation along with his muscular frame and lower-body strength, and is capable of generating rebounds, steals and blocks. He has been named to multiple NBA All-Defensive Teams, and was named the 2016–17 NBA Defensive Player of the Year.[132]