Issue link: http://itf.uberflip.com/i/536583
4 H. TOURNAMENT DOCTOR Each Grand Slam Tournament will have a Tournament Doctor and Sports Medicine Therapist/Trainer available at all times during the event. I. BALLS Each Grand Slam Tournament will provide tennis balls in accordance with the following: 1. Six (6) balls are to be provided for each Main Draw match and are to be changed after the first seven (7) and thereafter every nine (9) games throughout the tournament. Ball changes and the number of balls used per match shall be the same for all matches throughout the tournament and may be altered only with approval of the Referee in consultation with the Grand Slam Chief of Supervisors. 2. If a ball is lost or becomes unplayable then another may be added as soon as possible for use in play; when there are fewer than four (4) balls remaining, then another ball must be added for use in play. During the warm-up or within two (2) games after a change of ball, a new ball shall be used as a replacement; otherwise a used ball of like wear shall be supplied. Play must be continuous even if a ball needs to be replaced. 3. In case of a suspended or postponed match, the balls used in the warm-up will not be the balls used when play resumes. 4. At least three (3) new balls per day for practice must be available free of charge to each player accepted in the Main Draw or Qualifying competition from the day prior to the commencement of the tournament until he is eliminated. Balls of the make to be used in the Main Draw tournament are to be available for a reasonable period prior to the commencement of the tournament. Players must return practice balls. J. GRAND SLAM FINANCIAL OBLIGATIONS 1. Prize Money The players in each Grand Slam Tournament shall be compensated on the basis of their performance by on-site prize money which shall be distributed by each Grand Slam Tournament during or at the conclusion of the tournament. Except for on-site prize money no player shall be offered or paid any other money or anything of value except for amateur or professional expenses set forth below, unless additional financial and/or other incentives for players are specifically developed and approved by the GSB. Prize money shall be paid only for matches played. In Men's and Women's Doubles, teams withdrawing will receive ranking points and prize money for the previous round, unless the withdrawing player had withdrawn/retired from