The burgeoning Liverpool career of Jarell Quansah had been progressing almost as serenely as one of the defender's increasingly trademark composed performances. And then it happened.
A loose pass infield rolled straight into the path of Manchester United skipper Bruno Fernandes who. some 45 yards from goal, swiftly floated a shot over the head of Caoimhin Kelleher into the unguarded net.
Having been deservedly ahead at Old Trafford, Liverpool were needlessly pegged back and eventually needed a late Mohamed Salah penalty to snatch a draw, a result that prevented them returning to the top of the Premier League table.
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That was a month ago and Jurgen Klopp's side haven't been back on the summit since, now realistically having little to play during the closing fortnight of the manager's long reign with the title now effectively out of reach and Champions League qualification assured.
For Quansah, it was a chastening experience. But his performance in the immediate aftermath and subsequent games highlights the steely resolve and mentality that has been evident throughout his debut campaign for the Reds.
"When I was a younger I used to struggle when I made a mistake and sort of go under and stuff like that," he says. "Over the past few years - other than my (loan) spell at Bristol Rovers - I didn't get tested too much in the Academy, so I wasn't used to making big errors.
"So in such a big game obviously I made that error but I've got to take the positives from it, such as the way I bounced back from it and managed to play (the final) 40 minutes without putting a foot
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