There are lots of candidates....the ruck, the maul, the hit at scrum time, lifting in the tackle etc. My candidate would be the forward pass. There were some Aussie commentators last weekend, again bemoaning the fact that a Brumbie pass called forward, went backward out of the hand. Funny I never heard those comments when Jean passed backward out of the hand to Lambie at the RWC.
Best I can judge, it is still a formal requirement that the ball cannot travel forward relative to a line across the field. If this is true, given drift, every lateral pass is forward. That doesn't seem to be the intent, but the intent is not clearly defined.
And if you allow drift, how do you judge it? One way would be to compare the receiving player relative to the passing player....before the pass. If he is behind the player and the pass is backward out the hands any move forward could be ascribed to drift. So forward passes, are to players ahead of the passer at the time of passing.....provided there is a legitimate pass made. Kinda like the kicking rule.
Not perfect, but at least a specific data point. Nobody reffing today can judge drift. And certainly better than having one formal rule and a practice of ignoring it.


