Ashley Young blamed Manchester United’s shock Carabao Cup knockout against Derby County on an inability to build on an early lead.
The Reds were beaten 8-7 on penalties in a marathon shoot-out after the 90 minutes ended with Jose Mourinho and Frank Lampard’s sides locked at 2-2.
After Juan Mata's third-minute opener was cancelled out by two second-half Derby goals, United had goalkeeper Sergio Romero sent off but Marouane Fellaini scored an injury-time equaliser in a breathtaking finale.
Young reflects on shootout heartbreakVideo
However, the Rams won the penalty-kick climax in front of the Stretford End, and the Reds' captain for the night, Young, felt his team should have matched Derby’s intensity in normal time.
“I am not sure we have done enough in the 90 minutes to manage to win the game,
“ said the skipper.We have managed to dig deep and show character and take it to penalties but it just wasn’t enough to win the game.
“At 1-0 we had chances to win the match and on a different day the ball goes in the back of the net and it is a different game.
“When you play teams from the lower divisions it is always going to be tough and they had more intensity than we did. Obviously when you are playing these games you have to show that intensity and go further than the opposition but we didn’t do that and we got punished and they won the game.
“We showed that (intensity) when we started and went 1-0 ahead but you have got to build on that.
“When you don’t take your chances you get punished. Derby are a good footballing team and they showed that.We showed character to get ourselves back into it and take the game to penalties but it is a lottery from there.”
It was the second successive disappointment for United at Old Trafford after being held to a 1-1 draw against Wolves in the Premier League at the weekend. Young insists the Reds must now respond against West Ham, at the London Stadium in Saturday's lunch-time match.
“We have to dust ourselves down now, pick ourselves back up and go again on Saturday,” he said.
“This was a disappointing night and we have to get back to winning ways, get back to training and build and work again and work for the weekend.
“When you lose or draw a game, you want another game as quick as possible. Saturday is another day, there's another game and we will be looking to get the three points at West Ham.”
United 2 Derby County 2 (7-8 on penalties) article
Read our report as the Reds bow out of the Carabao Cup after an epic penalty shoot-out.