Liverpool boss Rafael Benitez admitted his side were not at their best during the 1-0 Carling Cup semi-final first leg win over Watford at Anfield.
Benitez said: "I was disappointed at half-time, we were losing the ball too easily but we improved. We had problems but in the end we controlled it.
"I am happy in the end, the win is the most important thing.
"We knew it would be a difficult game, they ran a lot, played well and with confidence and they were organised."
Benitez praised the contribution of striker Milan Baros, who came off the bench during the second half after a month sidelined with a hamstring problem.
He added: "He gives a different option for the team, he runs, he is quick, and it is important to have different possiblities in attack.
"We have lots of confidence in this game, we know it is important for us to try and do our best.
"We have the advantage, we can play well at home and away."