a scuffle in rugby scrum
Its common name is a RUCK.
In the union code 8 players from each side form the scrum. In the league code its 6 players from each side (league do not have flankers)
The ball is put in the scum in the loose head prop side in both codes (number 8 in league and 1 in union)
An unwritten law of watching rugby at a pub is to drink when a scrum is won against the feed (AKA a tighthead scrum win). Doesn't matter if its a team you follow or not.
That would be Rugby.
A Scrum is commonly done while playing Rugby.