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Post being replied to

I thought that at first too... by NDMike2001

I was watching on my phone and couldn't "rewind" it at the time. I made it a point to watch on DVR when I got home because I couldn't imagine why Klopp was yelling at Keita.

On the replay you could see Klopp away from the sub line barking instructions during the substitution. Keita was on his way to the bench before Klopp seemed to notice that the sub took place. Then he looked up and yelled for Naby when he saw that he missed him. The camera just caught it at a strange moment, because it looked like Naby was walking away from him.