Leinster gave Castres a 14-0 head start when the sides met at Stade Pierre-Antoine last January. Matt O'Connor's men fought back to take a 29-22 victory that day and will be aiming for a similar outcome on Sunday afternoon.
The offside Laws are designed to create space for the team in possession, and are key to providing positive attacking options. The referee’s role is to preserve this space.
Referees must be fully aware of all the Law relevant to off-side in all the Game areas – ruck, maul, scrum, line-out and in general play.
The current focus for referees is to ensure that: