Quote ="Monix"Surely the disallowed try was for running behind your own man??
Kasiano dummies the pass, Bird runs through, Kasiano comtinues behind Bird then passes. Doesn't matter if he takes out Tuimavave or not'"
I bet you're a nightmare to sit near in the stands
The rule is obstruction, you have to obstruct a defender for it to apply. This can be either stopping a defender getting to the ball carrier (hitting his inside shoulder as he slides across, or running straight into him), or stopping in the defensive line, which stops the defense sliding across (there was one of those on the Hudds/Cas game on Thurs, the commentators were pointing out the defender would never have got to the ball carrier - this is irrelevant, he's stopped the line sliding across, which affects defenders further out).
There is no 'running behind your own man' rule, or 'crossing', they're both fine as long as you don't obstruct a defender. The disallowed try should have been given IMO, poor read by the defender, he wasn't materially disadvantaged.