Quote ="Wellsy13"The fact that you have said "almost" always means that they aren't irrelevant to you.'"
The remainder of the 'almost' sentence I used to indicate an example of when the pitch markings could be relevant but clearly that situation didn't apply to Webb on Saturday.
Quote ="Wellsy13"The pitch markings cannot be used to determine a forward pass alone due to the "momentum" rule (that technically isn't anything to do with momentum, it's constant velocity). However, they can be used to estimate the velocity of the player and the ball and make a comparison.'"
Webb's pass was a face ball to the winger cutting the centre out, the longer the pass the less reliable an indicator pitch markings become.
Quote ="Wellsy13"To me, the main point is that the ball is ALWAYS in front of Webb. Had it been passed backwards, it would have been behind him at some point.'"
And to me the main point is the ball is never in front of Webb until after he is checked by Crooks' challenge. There are three possible directions for a pass to travel: backward, flat or forward - two of the three are legal passes.
Quote ="Wellsy13"Yes. He steps as he passes (as many players do to add momentum to the pass from a planted base). He accelerates forward after this. He was running sideways until that point. His forward motion may have been impeded by Crooks, but again that was AFTER the pass. The ball was never behind him, and if it had been passed backwards but moved forwards due to his constant velocity, the ball would have been =#0000BFbehind him at some point between him passing it and him being stopped by Crooks.'"
Why are you focussing solely on a pass needing to be 'behind' ? As explained above a ball can also be flat ie in-line for it still to be deemed legal.
I agree Webb plants his left foot to steady his delivery at the point of release where I disagree is that there was any element of acceleration in Webb's run after that point, if anything I'd say the opposite was true as he prepares for contact. Despite this slowing Webb remains in line with the ball before Crooks' intervention.
Quote ="Wellsy13"It was definitely forward
'"
It's interesting that when applying the pitch-marking theory in isolation Crooks' pass to Briscoe for his first should have been disallowed.