Issue link: http://itf.uberflip.com/i/428396
29 Case 2: A ball is called out, but a player claims that the ball was good. May the referee be called to court to make a decision? Decision: No. The chair umpire makes the final decision on questions of fact (issues relating to what actually happened during a specific incident). Case 3: Is a chair umpire allowed to overrule a line umpire at the end of a point if, in the chair umpire's opinion, a clear mistake was made earlier in the point? Decision: No. A chair umpire may only overrule a line umpire immediately after the clear mistake has been made. Case 4: A line umpire calls a ball "Out" and then the player argues that the ball was good. Is the chair umpire allowed to overrule the line umpire? Decision: No. A chair umpire must never overrule as the result of the protest or appeal by a player Case 5: A line umpire calls a ball "Out". The chair umpire was unable to see clearly, but thought the ball was in. May the chair umpire overrule the line umpire? Decision: No. The chair umpire may only overrule when sure that the line umpire made a clear mistake. Case 6: Is a line umpire allowed to change the call after the chair umpire has announced the score? Decision: Yes. If a line umpire realises a mistake, a correction should be made as soon as possible provided it is not as the result of a protest or appeal of a player. Case 7: If a chair umpire or line umpire calls "Out" and then corrects the call to good, what is the correct decision? Decision: The chair umpire must decide if the original "Out" call was a hindrance to either player. If it was a hindrance, the point shall be replayed. If it was not a hindrance, the player who hit the ball wins the point. Case 8: A ball is blown back over the net and the player correctly reaches over the net to try to play the ball. The opponent(s) hinders the player from doing this. What is the correct decision? Decision: The chair umpire must decide if the hindrance was deliberate or unintentional and either awards the point to the hindered player or order the point to be replayed.