9.  Player interference
    Each player must stay out of his opponent’s way after he has struck
the ball and (a) give his opponent a fair opportunity to get to and/or strike at the ball and (b) allow his opponent to play the ball from any part of the court to any part of the front wall or to either side wall.

10.  Let point
    (a) A “let point” may be called by the referee if after adequate
warning there is no attempt or evidence of intent on the part of a player to avoid unnecessary interference or unnecessary crowding during his opponent’s playing of a point.  Even though the player is not actually striking at it, the referee may call a let point.  The player interfered with wins the point.
    (b) If in the opinion of a player he is entitled to a let point, he
should at once appeal to the referee whose decision shall be final, except when judges are present, as described in Rule 11(b).
    (c) A let point decision can only be made when a referee is
officiating.

11.  Referee and judges
    (a) If available a referee shall control the game in any scheduled
match.  His decision is final, except when there are judges present as described in Rule 11(b).
    (b) Two judges may be appointed by the referee or tournament
committee to act on any appeal by a player to the referee’s decision.  When such judges are on hand, a player may appeal any decision of the referee directly to the judges.  Only if both judges disagree with the referee will the referee’s decision be reversed.  The judges shall not make any ruling unless a player makes an appeal.  The decision of the judges shall be announced promptly by the referee.
    (c) All referees must be familiar with these playing rules when
officiating in sanctioned matches.

12.  General
    (a) At any time between points, at the discretion of the referee a
new ball may be put in play at the request of either player.
    (b) Play shall be continuous.  Between the third and fourth games
there may be, at either player’s request, a rest period not to exceed five minutes.  Between any other games there may be, at either player’s request, a rest period not to exceed one minute.
    (c) If play is suspended by the referee due to an injury to one of
the players, such player must resume play within one hour or otherwise default the match.
    (d) The referee shall be the sole judge of any intentional delay,
and after giving due warning he may disqualify the offender.
    (e) If play is suspended by the referee for some problem beyond the
control of both players, play shall be resumed immediately after such problem has been eliminated.  If cause of the delay cannot be corrected within one hour, the tournament committee and/or the referee will determine when play will be resumed.  Play shall commence from the point and game score existing at the time the match was halted.