It was the worst possible way to lose against the worst possible opponents at arguably the worst possible venue. Now, just three weeks on from the lowest moment of a season otherwise packed with highs, Liverpool return to the scene of the crime.
And as goalkeeper Caoimhin Kelleher explains, another trip to Old Trafford could not come soon enough for Jurgen Klopp and his players.
“It’s nice for us to be going back so we can right the wrong of that FA Cup defeat," says the goalkeeper. "It’s the sooner the better for us. Maybe in the second half we weren’t as clinical as we should have been. We made a lot of chances and should have put the game to bed - and when you don’t do that then anything can happen.
'Wow, what was that?' - Liverpool coaches can't believe what is happening in training as Darwin Nunez change explained
Liverpool line-up reaction underlines change that should worry Man City and Arsenal
“It was a good lesson. It was my first time playing at Old Trafford and you could feel the crowd. It’s similar to Anfield. We have to manage that better as well. We will go there and try to control the crowd as much as we can.
“There was a feeling that we should have had it won. We were also a bit disappointed in our overall performance so we want to go back there and do much better. You need to take your chances."
While Liverpool's dramatic 4-3 loss last month ended hopes of an unprecedented quadruple, the Reds know victory this afternoon would represent a significant statement in the battle against Arsenal and Manchester City for the Premier League title.
Klopp's side responded to that loss by returning from the international break with hard-earned home wins over Brighton and, on Thursday, rock-bottom Sheffield United.
Read on liverpoolecho.co.uk