The Reds' No.9 has scored eight goals in his 11 Premier League appearances versus the Gunners – more than any other team.
Only Jack Parkinson, Gordon Hodgson and Robbie Fowler (all with nine) have netted more goals for the club over Arsenal than the Brazilian.
For more pre-match facts and figures, courtesy of LFC statistician Ged Rea, read on…
Between them in 27 league appearances for Liverpool, Firmino, Sadio Mane and Mohamed Salah have scored 19 goals against Arsenal.
Alex Oxlade-Chamberlain could play his 100th game for Liverpool in all competitions.