Contact with the ball was on the ground! It's not a matter of being better than anything! I'm not denying that he caught the RS, but when a player is going forward at full speed, he CANNOT suddenly come to a full-stop. That is where the law, as currently framed, is wrong, because it takes no account of the speed of the game, and 'collisions' as a result of two players moving at speed in the same direction. Take a look at these screen shots. Who initially had a high boot? The RS was so late to the tackle that a 'collision' was inevitable. Tarkowski was leaning back at the point of contact with the ball, which meant that as he cleared the ball his leg would naturally rise.
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