A miscued punt forward from Virgil van Dijk seemed to be heading into the arms of Pickford but, in his attempts to prevent a corner, the keeper spilled the ball underneath his own goal, where Origi was alert to head home.
Origi's dramatic strike sparked scenes of jubilation inside Anfield and Klopp himself got swept up in the moment, charging from his technical area to celebrate with Alisson in Liverpool's half. "I've said many times we are delighted but he can do better".
He later admitted his reaction was "not cool" and claimed to have apologised to Marco Silva on the final whistle. "All of your colleagues asked me about this situation but, to be honest, I didn't see what happened. I think this season we are going to do something", he concluded. I don't even know what I did, but I just remember sprinting back so we were ready for the [Everton] break.
"It was a lucky, lucky day for Liverpool". It's football. I can not tell you if it was disrespectful because I didn't see it.More news: Trudeau not among world leaders meeting with Saudi Crown prince at G20
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"I believed in myself, it wasn't easy and in football those moments keeps you stronger". Playing a Saints side bereft of confidence, United were once again only stirred into action once they had fallen behind, and produced another largely negative display in a 2-2 draw against a team that, before kick-off, looked there for the taking.
On Sunday, Liverpool will be facing rivals Everton in the Merseyside Derby and Salah, who has scored seven league goals so far this season, needs to score twice against the Toffees to become the record scorer in 50 league games for Liverpool. Dier celebrated his equalizer by making a shush gesture in front of Arsenal fans and it prompted a scuffle between both sets of players, with substitutes also getting involved in the squabble.
Klopp apologised to his Everton counterpart Marco Silva on the pitch after the incident and also in his post-match media appearances.
"We got it (the win) and we'll take it and it was a brilliant night".
"We knew we were coming up against a different Everton side".