Last month, former Liverpool striker Michael Owen claimed Roberto Firmino needed to step up his game and find some consistency in order to become a success at Anfield, describing the summer signing as having "one good performance in five or six".
The Brazilian has since hit a run of form that has seen him involved in more goals in 2016 than any other Premier League player (11) by scoring seven and assisting four.
Such a response to criticism is exactly what Liverpool fans wanted to see and has been largely responsible for the club's recent upturn in fortunes.
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The 24-year-old was exceptional once more during the Reds' Europa League last 16 clash with rivals Manchester United on Wednesday night, scoring as they took one step closer to booking their place in the quarter-finals with a 2-0 victory.
Firmino put in an energetic and creative display as part of a fluid front line consisting of countryman Philippe Coutinho and Daniel Sturridge, the latter netting a first-half penalty.
His contributions were incredibly effective against a lacklustre United defence, producing some superb touches and turns whilst creating multiple chances for his teammates, utilising the vision and passing range he was renowned for at former club Hoffenheim.
Work rate proved a vital component in Liverpool's win, forever hassling and pressing their opponents high up the pitch - and Firmino was a key instigator of that.
Impressive performances similar to that against United act as a reminder of why the Merseyside club paid £29 million to get their man, dispelling any doubts of his quality and earning a place in fans' hearts.
His long-term future at the club looks bright, but if Firmino's - and his teammates' - recent form is anything to go by, silverware could soon return to Anfield.