Among coaches, there has always been a controversy about the forehand loop technique.

Should the stroke for an exact straight line or should it be somewhat circular? From watching many, many, MANY top players, it is clear to me that the motion should be somewhat circular. I have chosen this short video clip to show you Rye Seung Min's forehand from multiple angles. Go to settings, and watch this youtube video using google chrome on the slowest slow motion.