Ralph Hasenhuttl admitted a lack of concentration cost Saints as they were dumped out of the FA Cup in a penalty shootout by Derby.

Saints led the Rams 2-0 in both the original third round tie and last night’s replay at St Mary’s, but on both occasions let the Championship team back into it by conceding twice in quick succession.

This time the match went to extra-time and penalties where Nathan Redmond’s miss proved the difference as Saints were dumped out.

It was a disappointing night, and Hasenhuttl felt a lack of focus played a major role.

He said: “If you see the first half, we weren’t good in the game and we had less pressure on the ball.

“We made good decisions at half time, we changed the shape and had more pressure and more situations to win the ball in better spaces.

“We created a lot of chances and it was much better in the second half. We scored two wonderful goals and then something happened that can happen. They got a goal from a set-piece that was hard to defend from a dangerous position.

“You could feel the players were thinking about what happened one-and-a-half weeks ago. “You could feel they were nervous and not so focused anymore.

“After the second goal, both teams had a lot of chances to win and we had a one-against-one in overtime that could kill the game for us, but we didn’t.

“We are out, which is a pity as it was a big chance to go to the next round, but we didn’t take it.

“We have to take time to recover very well because on Saturday we have an important game here at home against Everton.

“We should be more concentrated in this game than we were today.”

Hasenhuttl held his hands up and admitted that Saints didn’t deserve to make it through to a fourth round trip to Accrington Stanley because of their inability to secure a victory despite two-goal leads in both matches against Derby.

“I think it was unnecessary to lose on a penalty shootout today,” he said.

“If you have two times against Derby County where you have a two-goal lead and you can’t win this game in normal time, then you don’t deserve to go into the next round. We didn’t deserve, it was too easy.”