The Brazilian caught the eye with an impressive performance against TNS, having made his debut in the weekend win over Stoke.
Liverpool today took part in a behind closed-doors friendly against Welsh side TNS, which saw several first-team players work on their match fitness, but one summer arrival in particular steal the show.
The Brazilian made his debut for the Reds late on in the win over Stoke on Sunday, coming on with 12 minutes remaining, and ahead of Coutinho's long range match-winning strike.
With Firmino joining up at Melwood late on as a result of Brazil's involvement in Copa America, as a result missing the pre-season tour of Australia, every chance of match action with his new teammates is welcome, and such an impressive showing could put him in line for a larger role and a possible Anfield debut against Bournemouth next Monday.
Fellow new arrival Danny Ings also scored with a penalty, while Lazar Markovic netted too.
The likes of Adam Bogdan, Emre Can, Lucas Leiva, Alberto Moreno, Divock Origi, Jordan Rossiter, Mamadou Sakho and Kolo Toure were all involved during the match, said the Reds site.