because it shows them it means something to the players.
United had quite a bit of defending to do, against an almost full-blast Liverpool side, and there were a lot of tired players at the end of the match. Luis Suarez was always going to play, he can score a goal out of nothing and he lasted the whole game. David De Gea had to make an important save from Victor Moses. I think if Moses had misheaded it, he would have scored. I think he thought he was scoring anyway with that bullet header but De Gea made a great save.
Everyone played their part. Chris Smalling had a great game at centre-half. Sometimes players can be too tall to play at full-back and centre-half is definitely his best position, where he can get the ball down and give it to other players or clear it when he has to. Jonny Evans came off tired, Alexander Buttner was feeling his hamstring - people like them haven't played many games but some of them worked through the full ninety minutes and will be better for it.
After changing his line-up and beating Liverpool, David Moyes could have a selection headache against West Brom on Saturday. But he'd much rather have that sort of headache than the headache of facing the media after losing 4-1 last Sunday.
The manager knew a lot about Manchester United's players before he came here of course but he's finding out more as he continues to see them at close hand in training. And last night he saw some of them play their first match for a while and they all came through it well.