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Official Rules of Disc Golf


  1. Mandatory Lines
    1. A mandatory line is a line on the playing surface marked by the Director to indicate when a disc has missed a mandatory.
    2. If no line has been marked for a single mandatory, it is defined as a straight line extending indefinitely from the center of the mandatory object on the incorrect side, perpendicular to the line connecting the mandatory object to the previous mandatory object, or if there is no previous mandatory, the tee.
    3. If no lines have been marked for a double mandatory, then there are two lines, one for each mandatory object. Each line is defined as described above for single mandatories.
    4. A double mandatory may also be height-restricted, in which case there is a third line connecting the two mandatories, with the incorrect side being either above or below the line.
  2. A throw has missed a mandatory if, from the direction of the tee previous lie, it completely crosses a mandatory line and comes to rest without coming back across the line (a throw or sequence of throws that crosses the line in both directions is considered not to have crossed the line).
  3. A player who makes a throw that misses a mandatory receives one penalty throw. The lie for the next throw is the drop zone for that mandatory or, if no drop zone has been designated, the previous lie.
  4. The nearest mandatory whose mandatory line is crossed by the line between the lie and the target is considered to be the target for all rules related to marking the lie, stance, obstacles, and relief, with one exception: 806.01 Putting Area.