Squads
Each country was allowed a squad of 30 players for the tournament. These squads were to be submitted to the International Rugby Board by a deadline of 22 August 2011. Once the squad was submitted a player could be replaced if injured, but would not be allowed to return to the squad. There is also a stand-down period of 72 hours before the new player is allowed to take the field. Hence, a replacement player called into a squad on the eve of a game will not be permitted to play in that game.
Read more about this topic: 2011 Rugby World Cup