Chelsea are a class above so you go there with nothing to lose. Give it your best shot and write it off if you lose. Be thankful teams like ours don't have to face them every week
I don't know whether they're told to make quick decisions or if they just do it anyway. But I don't see the big rush. When Costa goes down the referee knows that one of two things has happened. Either the keeper has caught him or he's dived so there is a foul, either way. He should then blow his whistle and speak to the linesman who is much closer to the ball. It was a weird moment though. Initially I thought that it was a definite pen but in slow motion he couldn't have made it look more of a dive if he tried. Despite being clearly tripped he went down like a sack of ****e.
It was almost a carbon copy of our game last year with them, except we caused them a few more problems.