Quique Sanchez Flores denied Watford were suffering an FA Cup hangover after they slipped to a 2-1 defeat to Stoke City.
The Hornets looked a pale shadow of the side which memorably beat Arsenal six days ago to reach the semi-finals.
Goals in each half from Jonathan Walters and Joselu gave Stoke a comfortable victory despite Troy Deeney’s late consolation.
But Vicarage Road boss Flores insists his players are not already thinking about their Wembley date with Crystal Palace next month.
“I don’t know if last weekend had an effect but we are disappointed,” he said. “When we finally realised we were not in the match it was a little bit late.
“We created chances in the final third of the game. But in the first half we were not completely focused. We forgot the plan.
“We don’t play again in the FA Cup for a month. I don’t think the players are thinking about the semi-final, and if they are it would be a big mistake.”