Definition: Crossover footwork is one of the basic methods of moving around the court in table tennis. It is mainly used when a player wants to cover a large distance to his forehand side. For smaller distances, a shuffle step is used.
A crossover step to the right is usually performed by moving your left foot to the right past your right foot (crossing in front of the right foot), and then moving the right foot the same distance to the right just before the left foot touches the ground. The ball is typically hit while the player is in mid-air. Reverse these directions to perform a crossover step to the left.
Choppers will sometimes perform a crossover step by moving the first foot behind the other foot, thus allowing them to move sideways and backwards.