Caretaker Watford manager Malky Mackay believed his side fully deserved their 1-0 victory at Swansea which saw them progress to the last eight of the Carling Cup.
A goal by Lee Williamson midway through the first half proved sweet revenge for the Hornets, who were well beaten by the Swans two days ago in the Coca-Cola Championship. Tommy Smith made space down the right before slipping a pass through to Williamson, who moved on goal before lashing a shot into the corner.
"We wanted to make sure we reached the quarter-final of the Carling Cup, and the energy and enthusiasm the players showed tonight proved enough," said Mackay.
He added: "We showed a little cleverness and got our just rewards.
"It is my first win as manager, and the players' professionalism shone throughout the game.
"We have not given away sloppy goals, and it will help the club enormously if we can now also make progress in the league."
Martinez was disappointed with the manner of his side's defeat.
"I had no regrets about making the changes, but the biggest disappointment was that our performance wasn't up to our normal standard.
"We do not have to be perfect to get a result, and it is a great lesson to be learned by the whole squad.
"Everyone at the club has worked hard to get in this situation, and it is frustrating that we have let ourselves down because we gave them two chances and we were unable to control the game."
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