The Reds made the perfect start to their new Champions League campaign, winning 1-0 away at the Dutch champions thanks to a solitary own goal from left-back Nicolas Tagliafico.
After pocketing the three points, though, Klopp made a point of criticising the playing surface and felt it produced a low-quality football match that wore out both teams.
‘I really think the pitch was really tricky. It was like deep, muddy a little bit,’ he explained to BT Sport after the game.
‘Even if you can’t see it from outside but it was like this because both teams looked really exhausted pretty early.
‘It looked three days ago completely different, yesterday in training completely different. But it was the same for Ajax.’
He added in another interview with Ziggo Sport: ‘Surprisingly, the pitch was not good. I thought a football playing side would have a good pitch.
But Ten Hag had no time for Klopp’s complaints about the pitch, firing back at the German’s comments, and suggested Liverpool should be more worried about their own pitch at Anfield.
‘Klopp saying the pitch was bad? I don’t think the pitch was bad, no,’ responded the Ajax manager when informed of Klopp’s comments.
‘Let’s hope we get a better pitch at Anfield then.’
BT Sport pundit Rio Ferdinand was also slightly confused by Klopp’s comments, saying: ‘Obviously strange to hear that the pitch was a bit soggy and stuff, which was sapping the energy in the legs, but they got through it and that’s all you need to ask of them.’