structural:scholar_edition, stylistic:style_transfer, structural:expansion, stylistic:tone
Scrum

A scrum is a way of restarting the game safely and fairly after a minor infringement. It is awarded when the ball has been knocked or passed forward, if a player takes the ball over their own try line and puts the ball down, when a player is accidentally offside or when the ball is trapped in a ruck or maul with no realistic chance of being retrieved. A team may also opt for a scrum if awarded a penalty.

A scrum is formed by the eight forwards from each team crouching down and binding together in three rows, before interlocking with the opposing team. For each team, the front row consists of two props (loosehead and tighthead) either side of the hooker. The two props are typically amongst the strongest players on the team. The second row consists of two locks and the two flankers. Behind the second row is the number 8. This formation is known as the 3–4–1 formation. Once a scrum is formed the scrum-half from the team awarded the feed rolls the ball into the gap between the two front-rows known as the tunnel. The two hookers then compete for possession by hooking the ball backwards with their feet, while each pack tries to push the opposing pack backwards to help gain possession. The side that wins possession can either keep the ball under their feet while driving the opposition back, in order to gain ground, or transfer the ball to the back of the scrum where it can be picked up by the number 8 or by the scrum-half.