Liverpool boss Jurgen Klopp said it was hard to substitute Xherdan Shaqiri at half-time after the Swiss global had been influential in helping his team to a 3-0 half-time lead over Southampton at Anfield.
It was Shaqiri's shot that deflected in off Wesley Hoedt to open the scoring, with Salah tapping in the third from close range after a brilliant free-kick from the debutant struck the underside of the crossbar.
"It was not easy, to be honest". It's my job to sometimes deliver news they don't want to hear. Usually I don't explain substitutions at half-time but I thought it made sense. The free-kick was outstanding. What a ball. The whole team was not used to what we did today and, as a new player, usually you struggle most. He tried everything, the only problem was defensive. We have to work on that with him more often. "He was good, I liked it".
Southampton are coming off a disappointing 2-2 draw with Brighton, a game in which they led 2-0. That was the plan. "We saw that we had a few problems".
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Klopp had dismissed talk of a Salah goalscoring crisis with the Egypt global having drawn a blank in his last three games and the majority of Anfield was willing him to score every time he got in the penalty area.
'Yes, it's a surprise because of course you can not expect it (winning seven matches), but all performances we showed so far were at least good enough to win the games, ' said Klopp. It will be tough, but for all of us. "It is better to win these games than draw them or lose them, but I am really sure we are mature enough to understand it in the right way".
The Egyptian's two goals have come from 23 shots in total, at a conversion rate of just 8.7%, some way below the 22.22% he managed last season with 32 goals from 144 shots.
"I said to Shaqiri that I have never taken a player off at half-time after such an influential half but we wanted more control".
Juergen Klopp's side have won all six league games and are two points ahead of Chelsea, who have five wins from five games and play West Ham United on Sunday. "Second half was clearly a damage-limitation act".