This is a Free online video tennis instruction on how to hit a one-handed slice backhand drive. This is the underspin, backspin or slice backhand groundstroke.
This tennis low backhand slice file is tied to the backhand topspin tennis video lesson where the basics of the shot production are shown, please refer to it if needed. (you can find it here)
A good low backhand slice shot is mostly about ball feeling and good balance.