I would guess Fultz to be between 6'3 and 6'4. Ainge was always listed at 6'5 but in the pic he is wearing loafers. Also, Ainge has probably shrunk as much as an inch since his playing days. Fultz has on shoes with a thick sole, running shoes, so he appears taller then he normally would. Combine this with the camera angle and I am saying Fultz is actually slightly shorter then Ainge.