Celtic emerged victorious from their first meeting of the season with Rangers on Saturday afternoon, with second-half goals from Tom Rogic and Leigh Griffiths enough to give Brendan Rodgers' men the bragging rights in Glasgow.
The first-half was a tense affair with both teams having chances and penalty shouts, but an incident right on the half-time whistle sparked a very angry response from Rangers' manager Pedro Caixinha.
The Portuguese spotted a clash between Scott Brown and Alfredo Morelos and judged the Celtic captain to have deliberately elbowed his player. As Brown was walking off the pitch, Caixinha gave him a piece of his mind and had to be held back from following the Celtic man down the tunnel.
Speaking to Rangers TV moments after the final whistle, Caixinha played down Rangers' first-half penalty shout but was adamant that Brown had delivered a deliberate elbow and could not believe that it went unpunished.
He then explained that he told Scott Brown that if he had been playing he would not have accepted what went down.
I'm not someone to criticise the referee's decision [for the first half penalty], but I am someone to challenge what everybody saw, and when I see these things that go on I am not someone to just stay in his corner and let it happen.
I saw an elbow again, from Scott Brown. This is the second time, in the same place, on the same pitch, in the same match, and nothing happened.
So that's what I'm criticising, and that's why I went to him and told him; If I'm there on the pitch you're not going to put an elbow in my face.
Definitely not.
REACTION: Pedro Caixinha spoke to @RangersTV after today's match against Celtic. pic.twitter.com/zWba1qHRIz
— Rangers FC (@RangersFC) September 23, 2017
From the replays, it would have been very harsh to show Scott Brown a red card, but then again from Caixinha's perspective you can see why he thought that it was a clear elbow to the head in the heat of the moment.
You are always going to have tensions running on high when Celtic meet Rangers, and while there wasn't much in the clash itself, it's interesting that Caixinha singled it out as a moment he was unhappy with over the penalty shout.
We don't expect him to change his mind even if he sees the replays, of course.
