Drill
A training routine used by two players, where one player works on one part of their game (for example, their forehand topspin), whilst the other player works on a complementary aspect of their game (e.g. their forehand block).
In many cases, one player performs a more complex pattern than the other; for example the player hitting the forehand topspin might hit the ball from two different places. The player who is doing the simpler part of the routine (in the above example, the person blocking the ball) is known as the feeder.
