There are a few different situations: There is only one day overlap (example; Tournament A ends on Saturday and tournament B starts on Saturday). You can, but MUST NOTIFY the referee of the tournament starting and get his/her approval by writing (email). You can enter tournaments that overlap more than one day if: You have entered an international tournament (Tennis Europe or ITF) that overlaps with a domestic tournament. Please note you must be eliminated from all draws in the international tournament (singles and doubles) BEFORE the draw for the domestic tournament is made. Example: You entered an ITF tournament and lost in the 1st round of the main draw on Monday and the first round of the doubles on Tuesday. A domestic tournament starts on Wednesday, and the draw will be made on Tuesday evening, after you lost your international doubles event. Entry into the domestic tournament is permitted. Another exception is competing in only one event in a National Tour tournament, and one in a Junior tournament. Both referees must confirm in writing that they can accommodate you. NOTE: Referees are under no obligation to accept the request, as it will depend on how feasible it is to accommodate it (i.e. they may have a very heavy schedule and changes are not an option). If you have entered two tournaments that overlap and do not fit in the situations mentioned above, you must withdraw from one before the withdrawal deadline. Example: Tournament A runs from Sunday to the following Saturday, and Tournament B from Monday to Saturday of the same week. Tournament A has an U14 one-day event Tour 100 event on Tuesday and Tournament B has an U14 one-day event on Thursday. You can’t enter both as the tournaments overlap 6 days.