Trent Alexander-Arnold became the first player to qualify for the semi-finals of the ePremier League Invitational after beating Christian Atsu.
Second-half strikes from Mohamed Salah and Firmino secured the victory to set up a meeting with Manchester City winger and England team-mate Raheem Sterling, who knocked out Everton's Andre Gomes later in the day.
Asked about how he was able to keep his cool and come from behind, Alexander-Arnold said: "I try not to stress and make as few mistakes as possible. He scored the early goal but I was able to create my chances."
Atsu, meanwhile, admitted that the better man won: "It was a good game but he was better. I say congratulations to him."
Trent Alexander-Arnold (LIV) 4-1 Christian Atsu (NEW)
Diogo Jota (WOL) 5-2 Lys Mousset (SHU) | Report
Andre Gomes (EVE) 2-4 Raheem Sterling (MCI) | Report
Neal Maupay (BHA) 0-1 Dwight McNeil (BUR)* | Report
The prize fund for the ePL Invitational is being donated to the #PlayersTogether initiative, created by Premier League players as a collective way of generating funds for the National Health Service and distributing them where they are needed most.