Canadian doubles When three players are available, modified rules can accommodate the mismatch so that the single player does not have to be significantly better than the doubles team. The only major rule variation between Canadian doubles and traditional doubles tennis is that the team of two players can only hit the ball within the singles lines, whilst the single player can hit into the full doubles court.
Australian doubles / American doubles An informal and unsanctioned form of tennis, this is played with similar rules to Canadian doubles, only in this version, players rotate court position after each game. As such, each player plays doubles and singles over the course of a match, with the singles player always serving. Scoring styles vary, but one popular method is to assign a value of two points to each game, with the server taking both points by holding serve, and the doubles team each taking one if they break. This format is usually known as "American doubles" in the United Kingdom and Australia. In South Africa it is called "American singles", or cut-throat tennis. It is also found in the Caribbean.
Wheelchair tennis Played in both singles and doubles forms by people in wheelchairs. The main difference is that the ball may bounce twice before it is hit, the second bounce may even be outside the court. All four Grand Slam tournaments include wheelchair tennis.
Visually impaired tennis Visually impaired tennis (also known as
blind tennis in Japan, its country of origin, and as
sound tennis in some parts of the world) is competed in 4 types of classification where the B1 (blind) group requires players to wear a blindfold and utilizes special balls, which make a sound upon contact with the court. It usually uses a smaller court and a lower net than standard tennis; up to three bounces may be allowed before returning the ball. While sound tennis is not part of
ITF,
ATP, and
WTA tournaments, an international tournament is held annually, and world rankings are published for male and female players with different degrees of disability.
Mini-tennis There is an evolution in tennis training that employs the use of low-compression balls and in some cases modified court sizes. Organizations around the world have begun to use lower compression balls and modified court sizes as a way to reach out to younger tennis players interested in tennis. The use of low-compression balls and modified court sizes is meant to ease the process into becoming a competitive or amateur tennis player. The low-compression balls are colored differently to indicate the level of compression. Young players and beginners are likely to find the game easier to learn because the balls do not bounce as high or travel as fast as "
normal" balls. The modified smaller courts make covering the court, or reaching the opponent's shot, easier as well. ==See also==