1. A request for an Electronic Review of a line call or overrule by a player shall be allowed only on either a point-ending shot or when a player stops playing the point during a rally (returns are permitted but then the player must immediately stop).
2. The chair umpire should decide to use the Electronic Review when there is doubt about the accuracy of the line call or overrule. However, the chair umpire may refuse the Electronic Review if they believe that the player is making an unreasonable request or that it was not made in a timely manner.
3. In doubles the appealing player must make their appeal in such a way that either play stops or the chair umpire stops play. If an appeal is made to the chair umpire, then they must first determine that the correct appeal procedure was followed. If it was not correct or if it was late, then the chair umpire may determine that the opposing team was deliberately hindered, in which case the appealing team loses the point.
4. The original call or overrule will always stand if the Electronic Review is unable, for whatever reason, to make a decision on that line call or overrule.
5. The chair umpire’s final decision will be the outcome of the Electronic Review and is not appealable. If a manual choice is required for the system to review a particular ball impact, a review official approved by the referee shall decide which ball impact is reviewed.
6. Each player is allowed three (3) unsuccessful appeals per set, plus one (1) additional appeal in the tie-break. For matches with advantage sets, players will start again with a maximum of three (3) unsuccessful appeals at 6 games all and every 12 games thereafter. For matches with match tie-break, the match tie-break counts as a new set and each player starts with three (3) appeals. Players will have an unlimited number of successful appeals.