I thought Exum had some good moments on defense, but he can be lazy on getting through screens and sometimes he over commits and gets burned by the ball handler. I do believe he has all the tools to be an excellent defender, especially once he improves his strength and conditioning.
Well said, I was encouraged by his effort on defense. It could have been easy for him to slack off on defense and preserve energy for the offensive end to improve his stats. When he fell off on defense it seemed to be later in the game and later in the series he was playing in (more effort fresh off the bench). Good sign that he is buying into the importance of defense, however. I expected strength to be a problem, but I was hoping his cardio would have been better. I think his sloppiness and shot were effected by his gasping for air.