It was more Chiellini caught flat footed there.. Caceres had to come across and the ball went across his axis of back-tracking, short of a miracle interception there's no way Martin could have affected that outcome there.
We should be out for blood after the Athletico loss. Though I agree with your past posts that it wasn't the end of the world; still, the point it the loss should sting the team and get some fire in the belly!