I did not see the game, but everybody down on Shaka. It's hard to stop everything that comes at you especially when everyone else around u is falling apart. Maybe Jack would have done better maybe not, but from reading some post he did pretty well.
Goals start from the person who lose the ball especially if they should not have. Like in the Wales games, the defence kept getting in bad postions, ie, they keep letting the forwards in in front of them to recieve the pass coming across.
Yes you have to stay goal side but when you going down the midle and the ball is coming from the outside, if the man covering the player on the ball does not tuck in then the goal side player have to bust his ass to get in fron t the striker. Simple. Once the striker gets in there the goalkeeper is useless. There are no angles to make a save.