Is it:
A. A conditioning issue because he wants to save his energy for offense
B. An effort issue as per instructions from the coaching staff to not exert himself too much on that end
C. Rookie growing pains/mental lapses
D. A mindset issue:- he thinks other players should pick up the defensive slack because of what he provides offensively
E. Somewhere between just not caring and the NBA game being a bit fast for him at this point
:confused: