I've have searched on this topic, but there are so many topics about the serve it was impossible to get an answer. I was playing a doubles match the other night and an opponent would set himself ready to serve i.e. standing in position with the racquet and shuttle positioned as if he was about to serve. He would then wait anything up to 10 seconds before serving it. He would also vary the amount time so it wasnt consistent. Is this allowed? I am happy that he could vary the amount of time he was set before serving, but by that much? I would have thought that about 5 seconds would be the maximum otherwise it is unreasonable delay. I couldnt see it refered to specifically in the rules.