Each tennis match is made up of two to three sets. To win a set, you must win at least six games. The games are scored starting at "love" (or zero) and go up to 40, but that's actually just four points. From love, the first point is 15, then 30, then 40, then game point, which wins the game.
Each match consists of three sets. Each set consists of games. A player must win 6 games, but must win by two. The score must be six-four, six-three, six-two, six-one, or six-zero. If the score gets five-five, one of two things must happen. 1. One player must win two more games, so the score would be 7-5. 2. If the score goes six-six, a tiebreaker game is played.