crouch down in a normal defensive stance, and dont play him too close...give him teh shot if hes looking to pull a move or somethin. make sure ur feet r shoulder width apart (so not too close and not too far), so that u wont get crossed but u can still bring ur feet back together if he tries to go thru ur legs. and that ur down pretty low, but not so low that he can easily put it over ur head. i would also recommend playing a slightly staggered position, meaning that ur forcing him to his weak side.

and keep ur lead hand up, and one hand down, becasue that way he cant bounce it off ur head or put it over u as easy. the hand thats down can stop bad dribbling/crossovers, but dont reach if it looks like hes got control cuz then u'll just get crossed.