The likes of James Milner, Sadio Mane and Mohamed Salah were heavily involved from the off, but struggled to carve out any clear-cut goalscoring opportunities until a moment of brilliance 5 minutes before the interval handed Liverpool the lead that they fully deserved.
Despite dominating the game for large spells and taking the lead just before half time via a fabulous strike from Mo Salah, the Reds' wastefulness in front of goal and a needless penalty given away by Dejan Lovren all saw Sam Allardyce's side come away from proceedings with a 1-1 draw.
Rooney converted the penalty easily and Klopp's anger boiled over post-match in a heated interview with a Sky Sports reporter.
One man who, somewhat unsurprisingly, didn't agree with the decision, however, was Liverpool boss Jurgen Klopp, who simply claimed that 'I don't think it was a penalty'.
"I told the referee I didn't understand this".
"I'd be saying: "What [are] you doing?"
Home manager Jurgen Klopp left some of his star players out of the starting line-up, with Roberto Firmino, Georginio Wijnaldum, Emre Can and Phillipe Coutinho on the bench, preferring to play Dominic Solanke, James Milner, and Andrew Robertson.
Klopp said before the match: "It is part of the season where you have to make the changes when you can make the changes". The referee has to be fearless to give a decision like that.
"It was an extremely big decision for Craig Pawson and I'm really pleased he's taken the decision after seeing what he's seen and given the penalty".
Allardyce said: "It was a brilliant goal that they scored".
"Then we can stop the interview".