Action in tennis refers to how the racquet hits the ball to create a spin. How the racquet moves over or under the ball can affect its rotation.
Some of the main types of actions seen in tennis include Topspin, Backspin (also known as Slice), and Sidespin.
The action that the player uses will depend on the type of shot that they want to end up hitting. Topspins, for example, are ideal for heavy, attacking shots while a Slice keeps the ball low.
Professional players often use a combination of actions, mixing up their shots.
Tennis Spin: Topspin, Backspin, Sidespin – Action