Collecting the ball from Mohamed Salah, the Brazilian shifted onto his left foot before unleashing a venomous drive passed Paulo Gazzaniga.
And rival fans on Twitter were quick to contain that Sky Sports commentator Martin Tyler appeared to celebrate the Liverpool opener.
“MARTIN TYLER LITERALLY CHEERED WHEN LIVERPOOL SCORED,” one fan tweeted.
One Tottenham fan put: “Martin Tyler actually celebrated that goal in his “yesssssss”.
Spurs boss Jose Mourinho picked a surprise line up with youngster Japhet Tanganga in his backline at the expense of Jan Vertonghen.
And the 20-year-old was called into action early on when he blocked a shot from Firmino to keep Liverpool out.
Tottenham had marshalled Liverpool well until the breakthrough came on the the 37th minute.
With Leicester losing today a Liverpool win would see them go 16 points clear with a game in hand in the title race – ahead of Manchester City against Aston Villa tomorrow.
A win today would also see Liverpool set a new top flight record at this stage of the season.
Manchester City had 59 points by this stage in the 2017/18 season, but Liverpool would move onto 61 having only dropped two points.
Tottenham meanwhile are looking to regain some momentum as they look to keep up with the Champions League chasers.
Chelsea and Manchester United both won earlier today so Tottenham know a defeat will see them begin to be left adrift.
Tottenham academy coach Bradley Allen, speaking on BBC Radio London at half time, said: “The difficulty now for Spurs is how much they choose to engage in the middle third and higher up the pitch. That would mean they’d leave space for Liverpool’s devastating front three, who can really hurt defenders.
“There might be a personnel change as well. There are a lot of things for Jose Mourinho to consider at half-time.”