Wheelchair tennis can be played by able-bodied players as well as people who require a wheelchair for mobility. An extra bounce is permitted. This aphorism makes it possible to have mixed wheelchair and able-bodied matches. It is possible for a doubles team to consist of a wheelchair player and an able-bodied rookie (referred to as "one-up, one-down"), or for a wheelchair member to play against an able-bodied player. In such cases, the extra bounce is permitted for the wheelchair users only.

The short check in the center of each baseline is referred to as either the hash mark or the center mark. The outermost lines that make up the length are both called the doubles sideline. These are the boundaries used when doubles is being played. The area between the doubles sideline and the lines next to them is called the doubles alley, which is considered playable in doubles play. These lines next to the doubles sideline are the singles sidelines, and given to as boundaries in singles play. The line that runs across the center of a player's side of the Tennis Games court is called the service line because the serve must be delivered into the area between the service line and the net on the receiving side. Despite its name, this is not where a competitor legally stands when directing a serve.