Palace won the game on penalties after twice coming from behind as normal time finished at 2-2.
At halftime, Carragher posted: "LFC looking great going forward but susceptible defensively, as we’ve seen all pre-season. A lot of the goals conceded by LFC have come from going man to man really aggressively & leaving space in behind. Today Kerkez is getting dragged inside with Sarr leaving Gakpo chasing WB.”
Meanwhile, calling the game on the day, McManaman said of Palace's first goal: “It was Kerkez playing everybody onside.
“Everybody stepped forward and the left-back was stepping backwards.
“That gave Palace the opportunity – and Palace were exploiting it a lot of the time. They were putting balls into that area, especially in the second half, almost doing it blind.”
At fulltime, the former Reds winger also said: “I think the two goals today – not taking anything away from Crystal Palace – but if we’re talking about Liverpool’s defensive issues, they were defensive mistakes.
“There are things to work on and they will get better the more they get used to playing with each other as they are new players in a new system. But there are causes for concern because they are a bit vulnerable defensively.”