The Coman Tiebreak Procedure

The Coman Tiebreak Procedure is the same as the present tiebreak (set or match), except that ends are changed after the first point, then after every four points (i.e. after the 5th, 9th, 13th, 17th, points, etc.), and at the conclusion of the tiebreak.

The scoring in the Coman Tiebreak Procedure is the same as a set or match tiebreak. 

For example, if the Coman Tiebreak Procedure is used when the score is 6-6, the team whose turn it is to serve shall serve the first point, and then sides shall be changed. The following two points shall be served by the opponent starting with the ad court; after this, each player/team shall serve alternately for two consecutive points (starting with the ad court), changing ends after every four points, until the end of the tiebreak game.  

A Match Tiebreak is like starting a new set; therefore, each team may change the order of the serve.  

The Coman Tiebreak procedure rotates sides more frequently and evens out the sun and wind advantage or disadvantage. If serve order is maintained, the Coman tiebreak procedure allows doubles teams to continue serving from the same side of the court as they have been doing throughout the set or match. Singles players will have continuous service points on the same side of the net.