Control: Always on control, really good in a intensive match.
Calls: He saw well in a possible penalty for Arsenal, it wasn't. He gave many cards, most of all were correct. Only minor mistakes.
Neutrality: Really neutral all match long.
Style: Calm and confident, very good.
It was my first time watching Blom in a match. He did well in a intensive match, many fouls and he gave right cards. Ok assistants on offside, goal was regular. I was really impressed when he gave the card to a player who was asking for a card against his opponent. Excellent work and solid performance.