And when Firmino produced an outrageous, ingenious flick to set up Mohamed Salah to score the Reds' second shortly before half-time, he took his tally of assists for 2017-18 to 11.
As such, the No.9 has now been directly involved in 31 goals in just 36 appearances so far this term.
Here, with the help of Opta, we've crunched the numbers behind Firmino's most productive campaign in front of goal for Liverpool to date...
Free: Watch all 20 of Firmino's goals so far this season
Goals
140.