Be sure you're not moving the steering rack / column when you're checking for play 😛 If the steering wheel stays perfectly still and you see play in the wheel / hub, it could likely be your tie rod end(s) or your wheel bearing. Check to see what's moving when you get the play you're describing. Does the tie rod end budge at all, yet you have play in the wheel? Might be your wheel bearing (you should notice the same play when trying to wiggle the wheel vertically as well). Also watch your ball joint and see if the steering knuckle moves in relation to the control arm. If not then maybe you have some play in the steering rack or your inner and outer tie rods.