Scrum (rugby) the players who are designated forwards binding together in three rows. The scrum then 'engages' with the opposition team so that the players' heads are interlocked with those of the other side's front row. In rugby union the initiation of the process is verbally coordinated by the referee who calls 'crouch, bind, set' as of 2013 (formerly 'crouch, touch, pause, engage', 'crouch and hold, engage' before 2007). The scrum-half from the team that did not infringe then throws the ball into the tunnel created in the space between the two sets of front rowers' legs. Both teams may then try
Scrum (rugby union) approach to within an arms length of each other. The referee gives the command "crouch" and the opposing front rows then crouch so that their backs are parallel to the ground and their head and shoulders are no lower than their hips. Then the referee calls "bind" and "using their outside arm each prop binds onto the point of the opposing prop’s outside shoulder." This command is to ensure that the two front rows are not too far apart. Finally the referee then says "set" (this is not a command, but rather permission to the front rows to engage) and