Manchester United midfielder Michael Carrick was left frustrated by their 0-0 draw with FA Cup opponents Cambridge United.
Carrick, who captained the side after Wayne Rooney was rested from the 18-man squad, felt United could and should have won the game.
"We came here to win and get into the next round, but fair play to Cambridge, they made it difficult for us," he said. "The first half was very scrappy, it was tough. We weren't at our best which doesn't help, but I thought in the second half we were a lot better and we had some chances.
"On another day we could have won. It's frustrating, as we want to be through, but at the same time we're still in the FA Cup - we have the replay."
