Watford manager Javi Gracia admits his side are "paying for mistakes" after they were beaten 2-1 at Birmingham City.
Othmane Maamma halved the deficit for the Hornets in the second half after Paik Seung-ho and Demarai Gray put the Blues in front at half time.
AdvertisementAdvertisementAdvertisementGracia was left frustrated by errors costing the Hornets an "equal" game.
"We knew before coming today would be a tough game," he told BBC Three Counties Radio.
"In my opinion, it was equal. In the first half, they dominated more than us but we both had good chances.
"We didn't take the chances we had, they did with two great goals. After that, in the second half we played better and had more chances, playing in the opposition half. When you dominate, you have to score and we didn't do it.
"The other team is a good team, there is nothing to say. In terms of chances and possession, it was equal but we are paying for our mistakes."
AdvertisementAdvertisementAdvertisementGracia says he and his staff will work hard to bounce back.
"We have good players and we are going to insist on our work; I trust my players. We need to be more clinical."
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