No-ad : The first player or doubles team to win four points wins the game, regardless of whether the player or team is ahead by two points. When the game score reaches three points each, the receiver chooses which side of the court (advantage court or deuce court) the service is to be delivered on the seventh and game-deciding point.
Pro set : Instead of playing multiple sets, players may play one "pro set". A pro set is first to 8 (or 10) games by a margin of two games, instead of first to 6 games. A 12-point tie-break is usually played when the score is 8-8 (or 10-10). These are often played with no-ad scoring.
Match tiebreak : This is sometimes played instead of a third set. This is played like a regular tiebreak, but the winner must win ten points instead of seven. Match tiebreaks are used in the Hopman Cup for mixed doubles, on the ATP and WTA tours for doubles and as a player's choice in USTA league play.
Tennis is a sport usually played between two players (singles) or between two teams of two players each (doubles). Each player uses a racket that is strung to strike a hollow rubber ball covered with felt past a net into the opponent's court.