Conventional tennis serve instruction stresses the importance of getting into the trophy pose before the racquet drop. Fuzzy Yellow Balls (FYB), for example, does a great job of illustrating this. However, in watching the US Open, I've noticed there is considerable variation in how the pros get to their racquet drop. Sometimes, we see players using a clear momentary pause in the trophy pose (for example, Oudin, Wozniacki, Kleybanova, even Federer to some degree). Other players do not seem to pause at all (for example, the Williams sisters and Kuznetsova both use a much more fluid motion). So, we have an extreme between a clear, definitive pause, and an almost completely fluid "non pose." My question is, does it matter? Tricky has addressed C-style versus smile and shoulder versus elbow, but I can't find anything that answers this specific question. As somoene who is struggling to put the pieces together, I have a hard time grasping how someone like Serena Williams is able create such a fluild motion in her backswing. Does anyone teach this?