What is written here constitutes the essentials of The Code shall apply in cases not specifically covered by The Rules of Tennis and USTA Regulations. There are a number of things not specifically set forth in the rules that are covered by custom and tradition only. For example, if you have a doubt on a line call, your opponent gets the benefit of the doubt. Further, custom dictates the standard procedures that players will use in reaching decisions. These are the reasons why we need a code.
Tennis is a game that requires cooperation and courtesy from all participants.
Counting points played in good faith. All points played in good faith stand. For example, if after losing a point, a player discovers that the net was four inches too high, the point stands. If a point is played from the wrong court, there is no replay. Corrective action may be taken only after a point has been completed.