Not a lot of people pegged him as the 20-goal-a-season striker Liverpool supposedly needed but, here we are in February, and Firmino has 20 goals.
However, defending wasn't brilliant, especially from balls into the box and so the likes of Hoedt and Stephens will need to watch out for this as Liverpool could really damage us with the likes of Mane, Firmino and Salah.
It was by no means a vintage display from Jurgen Klopp's men, but they did ultimately cruise thanks to the individual quality of Firmino and Salah, who have now scored 34 of Liverpool's 61 Premier League goals this term.
With a clean sheet and the satisfaction of closing the gap on second-placed Manchester United to just two points to boot, Liverpool fans have every right to be buzzing about the way things are going right about now.More news: Apple's pricey HomePod sounds great but exacts some trade-offs
Firmino collected the ball from Salah before producing an exquisite flick back into the Egyptian's path, and Salah made no mistake with his finish into the bottom corner for his 29th goal of the season.
"We did what we wanted to do and knew the strength of Southampton".
The Saints had gone 12 league games without a win before last weekend.
"Important for us to get a good start". Mohamed Salah doubled Liverpool's score in the 42nd minute.
Saints boss Mauricio Pellegrino, meanwhile, lambasted the attitude of his players during the second half as they failed to build on last week's triumph at fellow strugglers West Brom, meaning his side have won just once in 14 top-flight matches.