In the game of rugby there are 15 players in each team made up of both forwards and backs.
The forwards wear jerseys numbered from 1 to 8 and are generally larger than the backs. Their main role is to move the team up the field and gain possession of the ball in scrums and lineouts.
The backs are players who wear jerseys numbered from 9 to 15 and are generally faster than the forwards. Their main role is to move the team up the field by passing and kicking.
There can be up to seven reserves that a coach can call upon to replace existing players during the game.