Danny Ings scored early to help Southampton to a shock 1-0 victory over Liverpool as the defending champions continue to stutter.
The loss means that Manchester United will go top of the table – they are now second only on goal difference with a game in hand – if they beat Burnley on 12 January.
Jurgen Klopp was left bemused by the officiating in general saying Manchester United “had more penalties in two years than I had in five-and-a-half years”.
“If anybody ever again will say Sadio Mane is a ‘diver’, it’s the biggest joke in the world,” Klopp told Sky Sports. “This boy tries to stay on his feet with all he has. In two situations… other teams will get a penalty for it, let me say it like this. Then the handball, I don’t know who will explain that to me.”
Speaking in his post-match press conference, Klopp added: “We had a really good view of it [the Mane incident], and it looked like a clear penalty. I turned around to the fourth official and asked if it was going to be checked, he said it already had been and was not a penalty. That’s 100 per cent true, and now someone wants to tell me how quick they had it in all these different angles.
Southampton are sixth, ahead of Chelsea in 9th and Arsenal, who are up to 11th.
“There were tears in my eyes – because of the wind,” said manager Ralph Hasenhuttl jokingly.
“When you see our guys fighting with everything they have it makes me really proud. You need to have the perfect game against Liverpool and I think we did that.
“It felt like we were under massive pressure and the defending around the box was the key today – then still try and play football. We did it in a good way.
“It was an intense game, my voice is nearly gone. The guys are tired, you have to be to win against such a team. The guys believed in what they were doing. In the 92nd minute I thought, OK, it can be something for us. It’s a perfect evening.”