I disagree with my Sportsmail colleague Mark Clattenburg on two of the three incidents, I'm afraid!
He says it wasn't a penalty for Arsenal — I say it was because Ederson wiped out Martin Odegaard.
He says it wasn't a penalty to Manchester City - I agree as Bernardo Silva dived before the contact from Granit Xhaka.
He says it wasn't a second yellow for Gabriel Magalhaes - I say the Arsenal defender was daft in committing such a poor challenge on City forward Gabriel Jesus and let his team down.