while there is a limit to the patience of even the most ardent of scrum aficionados, what if actually quite a lot of people ...

They are almost always the six forwards in the side. The scrum is formed at the place where the infringement occurred. However, all scrums must take place at least 10m from the touch or goal lines.

Additional scrum analysis showed that only 5% of all scrums collapsed, but the propensity for injury was four times higher (2.9 (1.5 to 5.4) injuries/1000 events) and the severity was six times ...

Background Rugby Union scrums which collapse possess a higher injury risk than completed scrums. A mechanically stable scrum should limit the motions which generate uncontrolled and hazardous ...

As Washington's players explained, the scrums in front usually arise out of... well, nothing. "Just two people standing next to each other. Sometimes, that's all it takes," John Carlson laughed.