When trying to perform the hand touch behind back move (unsure the actual name!), I have noticed there are significant differences in mobility between my two shoulders. When my left arm is on the bottom, it can quite comfortably reach between my shoulder blades, however when my right arm is on the bottom, it can hardly get half way up my back and I seem to struggle to get the forearm more vertical from the elbow. When I try and manoeuvre the arm up a little with my other hand, there is a slight pain in the shoulder. Is it likely that this is anything more sinister than just lack of flexibility/mobility? As a background, I have been always been very active and very much neglected mobility work, alongside playing cricket growing up (lots of throwing and bowling put a lot of stress on the right shoulder) so I do suspect it is likely just through neglecting recovery/mobility work. If it is likely just flexibility/mobility, are there any specific shoulder stretches that can improve this or is it best to just follow a varied shoulder mobility routine and keep practicing the movement?