Owen Beck's firm delivery from the flank proved the deciding moment on 86 minutes for the 1-0 win via an own goal.
Klopp said afterwards: "Harvey [Elliott] again first half, really, really good. The kids are doing well, I have to say. I really enjoyed a lot watching them and helping them to understand the game better and better and better, to understand the position and they have to be brave otherwise it would be a waste of time.
"That Owen was involved in the goal is nice for him, he played good I have to say. Second half we played a different system but you have to make the difference in little one-on-one situations; if you get the ball and only are passing, we have always eight players in really good positions. You are everywhere under pressure, but if you can make a little difference with a little acceleration then all of sudden the game changed.
"We did that, Owen did that in a couple of times, Kaide [Gordon] did it as well. We had good balls in behind for Divock [Origi]. Billy [Koumetio] played his first game of pre-season, was OK as well, so all fine."
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