By my count Trent Alexander-Arnold attempted 11 crosses in this game – 4 have reached their targets, 3 were on target but missed by the receiving players, 1 was under-hit and 3 were blocked by defenders. Never seemed like he was forcing it too; he passed the ball short when the situation required it, but whenever he was shaping up for the cross teammates were always flooding the box – a sign of trust in his ability.
I think a top-notch crosser of the ball is one of the best weapons against breaking down teams who defend in numbers and we've definitely got one in TAA. And because of his speed and long stride, he has an easier time creating a yard of space for himself than, let's say, Milner. It's very hard to defend against a player like that and this is one of the few instances when defending in large numbers doesn't really make any difference – because there are only 2 very specific places on the trajectory of the ball where it can be intercepted and all other defenders are nullified when the ball is airborne. I always maintained that there is no single solution to our problems with teams who defend deep – multiple things will be required to solve this problem and it seems one of these solutions is developing in front of our eyes.