Jurgen Klopp felt it was "incredible" that Paul Tierney opted not to award Diogo Jota a penalty in the first-half of Liverpool's draw at Tottenham.
The Reds forward did score in north London, but his side still dropped points in the title race.
Jota was bundled over in the opening 45 minutes but both Tierney and the VAR decided it wasn't worthy of a penalty, much to the surprise of many.
Klopp quizzed the referee in the tunnel and the official felt as if the Portuguese star attempted to buy the foul by stopping when the challenge was coming.
Such an explanation left the Liverpool boss scratching for answers, citing Tierney's lack of playing experience as a major issue.
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He told Sky Sports: “It is always helpful when you play football yourself. When you see the situation back (Diogo Jota’s penalty appeal), the VAR is there. Why is he stopping? I don’t understand.
"The draw is fine. We are not crazy enough to think we cannot draw at Tottenham but these situations are crucial.
"I was a bit more emotional in the game but he gives me a yellow card but it is not allowed in a situation like this? He comes over and gives me a yellow card but I’d have preferred the right decisions on the pitch."
Sunday's clash was only the sixth time Tierney had refereed a Liverpool Premier League game since the beginning of last season.
Nevertheless Klopp eluded to a problem between him and the official.
He added: "Just an objective ref who sees the situations and judges them. He told me he thinks he stops on purpose. It is incredible.
"He had the best spot on the pitch and doesn’t give it. You will have to ask him what his problem is with me."
The man in the middle also opted to dismiss Andy Robertson in the second-half after consulting the VAR monitor.
However Tierney chose not to send-off Harry Kane after the Tottenham forward scythed down the Liverpool left-back.
Klopp claimed: “You can give Robbo a red card. It is not the smartest challenge but that is definitely a red card. No doubt about it. His leg was in the air, it was pure coincidence. Harry cannot judge it. If Robbo’s leg is on the ground it is a broken leg.
"We have a VAR sitting there and he thinks have a look again at Robertson again. Fine that’s what he is there for. But what did he do in that situation?"
