VII. THE COMPETITION VII. THE COMPETITION 5)  For doubles, the Match Tie Break shall be considered as a new set and each  team shall receive three (3) challenges. Challenges remaining from the previous  set do not carry over into the Match Tie Break. Successful challenges do not  reduce the number of challenges that may remain. b) Time Violation or Code Violation.  A Time or Code Violation must be as - sessed if the ball is not struck for the next point within the twenty-five (25)  seconds allowed, except if the Chair Umpire extends the time for special cir - cumstances defined by ATP. There is no time warning prior to the expiration  of the twenty-five (25) seconds. 6)  In order to challenge, a player must show an immediate interest in making a  challenge and must do it in a timely manner. The key to the policy is “immediate  interest”. The player must also make his/her intention to challenge known to the  Chair Umpire either verbally or visually using his racquet or finger. The Chair  Umpire will (a) reconfirm with the player his intent to challenge; (b) confirm that  the player has challenges remaining; and (c) proceed with the electronic review. 7)  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. In this case, the  player shall not have his available number of challenges reduced. 8)  If there is no call made from the on-court officials (unsighted Line Umpire and  Chair Umpire cannot make the call) on a point ending shot, the Chair Umpire may  call for a review and the result of the review will not affect the remaining challeng - es of either player. 11)  For each court that is using a review system, there shall be a minimum of one  (1) video board, of sufficient size, located in a position where the Chair Umpire,  players and spectators may view the results of the challenge. 12)  Review Official Protocol is described in “Exhibit T.  * Review official and supporting technology staff shall be located within the sta - dium or arena in a secured area and with an unobstructed view of the court. d) Notify the Chair Umpire immediately in the case of a system failure or any  other condition that prohibits or brings into question the ability of the system  to review a challenged call. In this case, the Chair Umpire shall immediately  notify both players that review is not available until further notice. c) Monitor the system to ensure that it is functioning properly. b) Act as the final authority on tracking the number of challenges each player  has remaining. a) Determining which impact shall be reviewed by the system. 9)  The decision of the electronic review is final and cannot be appealed. 10)  A certified official, approved by the ATP Supervisor, shall act as the Review Offi - cial* and his duties shall include, but are not limited to: B. Electronic Review - Live Line Calling (Live ELC) (See ATP Addendum, page  388) M. Continuous Play/Delay of Game  1) Time Between Points. 25 Seconds/Continuous Play Play shall be continuous, except that a maximum of twenty-five (25) seconds may  elapse from the moment the ball goes out of play at the end of one point to the time  the ball is stuck for the next point, except at a ninety (90) second changeover or a one  hundred and twenty (120) second set break. The procedures for enforcing this rule  are as follows: a) Start Stop Watch.  The Chair Umpire must start the stopwatch after the ball  goes out of play or when the players are ordered to play. 162 163 a) The Chair Umpire may stop a match temporarily because of or conditions  of the grounds or weather. Any such stoppage by a Chair Umpire must be  reported immediately to the Supervisor. Once a match is stopped and until  a match is postponed, the Chair Umpire must ensure that he, the players  4) Not Playing to the Reasonable Pace of the Server b) Time Violation or Code Violation.  The Chair Umpire must assess a Code  Violation if the receiver is employing “gamesmanship.” The Chair Umpire  must issue a Time Violation before the expiration of twenty-five (25) seconds  if the receiver’s actions delay the reasonable pace of the server. a) Start Stop Watch.  The Chair Umpire must start the stopwatch when the play - er is ordered to play or the moment the ball goes out of play. d) Time Violation or Code Violation.  The Chair Umpire must assess a Time  Violation or, when applicable, a Code Violation (after a medical time-out or  treatment) if the ball is not struck for the next point within the one hundred  twenty (120) / one hundred fifty (150) seconds allowed, provided there has  been no interference which prevented the server from serving within that time  or a delay by the Chair Umpire. c) “15 Seconds.”  The Chair Umpire may announce to players “15 Seconds” if  the players are still at their chairs and/or have not started toward their playing  positions. b) “Time”.  The Chair Umpire must announce to players “time” after 90 seconds  has elapsed. If requested, prior to the match, by a television broadcaster, the  Chair Umpire shall have the authority to delay the start of play until the end of  the one hundred twenty (120) second set break. a) Start Stop Watch.  The Chair Umpire must start the stopwatch the moment  the ball goes out of play. 3) 120 Seconds/Set Break 5) Stoppage and Postponement of a Match d) Time Violation or Code Violation.  The Chair Umpire must assess a Time  Violation or, when applicable, a Code Violation (after a medical time-out or  treatment) if the ball is not struck for the next point within the ninety (90) sec - onds / one hundred twenty (120) seconds allowed, provided there has been  no interference which prevented the Server from serving within that time or a  delay by the Chair Umpire. c) “15 Seconds.”  The Chair Umpire may announce to players “15 Seconds” if  the players are still at their chairs and/or have not started toward their playing  positions. b) “Time.”  The Chair Umpire must announce to players “Time” after one (1)  minute has elapsed. If requested, prior to the match, by a television broad - caster, the Chair Umpire shall have the authority to delay the start of play until  the end of the ninety (90) second changeover period. a) Start Stop Watch.  The Chair Umpire must start the stopwatch the moment  the ball goes out of play. 2) 90 Seconds/Change-Over (Changing Ends)