...I'm no football expert, but doesn't the manager pick the team? And doesn't the manager pick the team he thinks will win? So, if your manager picks a team that gets stuffed, then ...?
I'm also not into this 'the B team' - most of your players have got more experience of the Prem than Hull's, even if they're only 12. But you praise your manager on one hand for doing this (ie playing a yoithful team) and building a team for the future, and then also use it as an excuse when you lose..You can't have it both ways - either they're good enough to play, or they're not. And if they play and get stuffed, then they're fair game.