The national team striker found the right space in the penalty area and pressed in the pass from Federico Chiesa. Isak celebrated properly and the response from the audience was noticeable. The goal was long-awaited by both the supporters and the world's third most expensive player of all time.
Already before a minute had been played, Isak got a huge chance, but Southampton's goalkeeper Alex McCarthy parried the shot from close range.
Southampton was extremely close to taking the lead just before Isak got the reward. Stuart Armstrong hit the crossbar, whereupon Léo Scienza headed the rebound outside.
Liverpool's manager Arne Slot rotated freshly in the squad and replaced the entire starting lineup compared to the derby against Everton the past weekend. Among other things, the youths Giovanni Leoni, 18, Trey Nyoni, 18, and Rio Ngumoha, 17 years, got a place in the team.
"Still early"
For Isak, who missed the preseason matches due to the infected transition from Newcastle, a half in the league cup match was an excellent opportunity to carefully get into shape.
It's still early. New club and new teammates, but I feel good. It will only get better with each match, says Isak himself about the form.
After the first half, however, it was finished playing for Isak, who in the second half was replaced by Hugo Ekitiké.
Red card
Shea Charles equalized for Southampton, but Ekitiké got the last word with five minutes left.
The striker tore off his jersey in pure joy – and got a yellow card, the second for his part, and Liverpool had to finish the match with one man less.
Liverpool meets Crystal Palace away in the Premier League on Saturday and then plays against Galatasaray in Istanbul in the Champions League on Tuesday.