Underrated and often outshone, forward Roberto Firmino is enjoying his best campaign yet at Liverpool. The Brazil international was rewarded for his performances this season with a long-term extension by the Premier League giants on Sunday. Firmino, 26, has been a fine contributor for Liverpool since his arrival in 2015, but with first Philippe Coutinho and now Mohamed Salah taking centre stage, his displays have sometimes gone under-appreciated. But he is enjoying his best campaign yet at Anfield and has led the way for the Reds since making the move from Hoffenheim. We take a look at the Opta numbers behind Firmino's career at Liverpool so far. "I love the fans. Every time I go into the city centre and see the fans, they always greet me and I feel very well here in the city. The fans are fantastic to me." pic.twitter.com/fcAsC10y5L — Liverpool FC (@LFC) April 29, 2018 50 – Firmino has scored 50 goals in all competitions for Liverpool – the most of any player since the Brazil star made his debut in August 2015. 32 – He has contributed 32 assists – also a team-high since his arrival. James Milner (29) and Coutinho (24) are the next best. 82 – With 82, he clearly tops the list for goals and assists combined during this period, ahead of Coutinho (62 – 38 goals, 24 assists). pic.twitter.com/Y3qn6cIcNT — Liverpool FC (@LFC) April 29, 2018 36 – The only Brazilian to score more Premier League goals than Firmino (36) is Coutinho (41), but is seemingly set to surge past his former team-mate. 27 – Firmino has scored 27 goals in all competitions this season, easily bettering his previous two tallies of 11 and 12 for Liverpool. 21.3 – After holding a shot conversion rate of 10.3 per cent in each of his first two campaigns at Anfield, he has improved to 21.3 per cent in 2017-18. 42 – With 27 goals and 15 assists, Firmino's direct involvement in 42 goals for Liverpool this season is more than he managed in his first two campaigns combined (40). 42 - Roberto Firmino has been directly involved in 42 goals for Liverpool this season (27 goals, 15 assists); two more than in his previous two seasons combined. Rewarded. https://t.co/g8pjH8wtd1 — OptaJoe (@OptaJoe) April 29, 2018 8 – He relishes the big occasion, having contributed to eight goals against Manchester City (four goals, four assists) and Arsenal (five goals, three assists) – his best returns against any opponent.