ALAN Pardew bemoaned the defensive lapse which sent Newcastle United out of the FA Cup.
And Pardew has warned his players they must tighten up for the visit of Manchester City to St James’s Park on Sunday.
United were beaten 2-1 by Cardiff City in Saturday’s third-round tie.
Newcastle took a 62nd-minute lead through a Papiss Demba Cisse goal, but Pardew’s side were undone by strikes from visiting substitutes Craig Noone and Fraizer Campbell.
Noone struck from 25 yards after Cheik Tiote was dispossesed in midfield, and Campbell lost Mapou Yanga-Mbiwa, his marker, to head a Guy Whittingham corner home 10 minutes from time.
Pardew - who felt his team were “vulnerable” from set-pieces –was left to count the cost of the mistake.
“We were fairly in control of the game with about 15 minutes to go, and we lost that period of the game,” Pardew said.
“It was the crucial period. They got a bit of a wonder goal to equaliser, but the second goal was poor. We’ve got to do a lot better than that.
“It was a free header in our six-yard box. We should have done better.”
“And we should have kicked on when we got the goal. We didn’t do that, so those mistakes cost us.”
Pardew was without two of his first-choice back four with Fabricio Coloccini injured and Mathieu Debuchy suspended.
Long-serving Steven Taylor made his first appearance since August 19 alongside Yanga-Mbiwa.
Davide Santon was switched to right-back in Debuchy’s absence, while Massadio Haidara filled in at left-back.
“We had a whole new back five, and other than set-plays, I thought they played OK, if I’m honest,” said Pardew. “But at set-plays, we looked vulnerable, and I’m afraid that can make the difference, like it did.”