Law 12: Ball Touches a Line

Test 1Balls on the linesTake a test

1. Lines belong to the court they mark out.

   Source: ITF Rules of Tennis 2026, Rule 12 · recall

2. Touching any part of the line counts as touching the court.

   Source: ITF Rules of Tennis 2026, Rule 12 with Rule 1 · applied

3. The service line is part of the service court it bounds.

   Source: ITF Rules of Tennis 2026, Rule 12 with Rule 1 · applied

4. The centre service line bounds both service courts, so it is in for each.

   Source: ITF Rules of Tennis 2026, Rule 12 with Rule 1 · applied

5. In singles the court is bounded by the singles sidelines; the doubles sideline is outside it.

   Source: ITF Rules of Tennis 2026, Rule 12 with Rule 1 · applied

6. In doubles the court runs to the doubles sideline, which is part of it.

   Source: ITF Rules of Tennis 2026, Rule 12 with Rule 1 · applied

7. The doubles court includes the alleys, up to and including the doubles sidelines.

   Source: ITF Rules of Tennis 2026, Rule 12 with Rule 1 · applied

8. The singles sideline is the last in-place; the alley and beyond are out.

   Source: ITF Rules of Tennis 2026, Rule 12 with Rule 1 · applied

9. In doubles all three are inside the court; in singles the doubles sideline is out.

   Source: ITF Rules of Tennis 2026, Rule 12 with Rule 1 · recall

10. Only A touches the singles court; in singles the alley and the doubles sideline are out.

    Source: ITF Rules of Tennis 2026, Rule 12 with Rule 1 · applied