Former Premier League referee Dermot Gallagher dissects the flashpoints from the weekend's football.
Incident: Liverpool weredenied a last-gasp penalty when Jeremy Doku clattered Alexis Mac Allisterwith a high boot deep in second-half stoppage time.
Dermot says: "From my point of view, it's easy to give the penalty. If you give it, there won't be much talk about it.
"Doku gets the ball, there's no doubt about that - the argument is, does getting the ball negate a penalty?
"Well, we saw at Bournemouth [recently], no.
"VAR is sure Doku gets the ball, he's right, so he decides to go with the on-field decision of no penalty.
"It raises lots of dilemmas, I think there would be less argument if it was given as a penalty. I'm surprised there is a wide split. It's a big, big call. He made the decision based on what he saw."
Incident: John Stones rounded off a perfect training-ground routine from Kevin De Bruyne's clever corner to give Man City a first-half lead - but was Nathan Ake illegally blocking Alexis Mac Allister in the lead up to the goal?
Dermot says: "I think it's a good goal. I was surprised when I saw it - I thought 'where are the defenders?'
"They set up differently, and Ake is just too strong. I'd be surprised if the referee penalised anyone there."
Incident: Brentford boss Thomas Frank felt Kai Havertz should have been sent off before scoring Arsenal's winner for an apparent dive in the final half hour, having already been booked for an elbow earlier in the game.
Havertz was awarded yellow card for a trailing arm on Kristoffer Ajer.
Dermot says: "We've seen lots of these this season. He looks at the ball the whole time, not the player, but Havertz does throw an arm out which catches Ajer in the face.
"You've seen plenty of
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