Rugby Union/8-man

The 8-man stands at the very back of the scrum. There is only one on the field for a team at one time.

In the Scrum

 * Organize the scrum's push
 * Often the forward captain
 * Control the ball when it comes back
 * Protect the scrum half when s/he is passing

In General Play

 * Follow the ball around, to support the runner
 * Be ready to run the ball into the other team's defense
 * Be ready to tackle the other team's big players
 * Be active in the ruck

In the Lineout

 * Stands at the back of the lineout
 * Often the tackler when the other team throws in/steals the lineout