Daniel Pudil says he was "disappointed" after the Hornets let a two-goal half-time lead slip against Blackpool.
Ikechi Anya and Troy Deeney's goals meant Watford were two up inside 21 minutes at Bloomfield Road on Saturday.
But the visitors were poor in the second half and Isaiah Osbourne equalised with an injury-time goal.
Pudil said: "It was disappointing in the end as we were leading 2-0 at half time against Blackpool, who we knew were a good side.
"Second half Blackpool opened it up. We had to defend, to keep the ball and we couldn’t and they scored two goals."
One player who impressed Pudil was Blackpool's England Under-21 winger Tom Ince. After hitting the bar in the second half, Ince set up Osbourne for the equaliser in injury time.
The Czech Republic international said: "It was difficult for the defenders in the second half, playing against players like Ince. I think he is very good - very young - and I think he could be very good in the future."
Despite the fact the Hornets had a disappointing end to the game, Pudil felt that they played very well in the first half.
"We played very well and I think we should have scored more goals," Pudil commented. "They only had one chance in the first half but we didn’t keep the ball and we made it difficult for ourselves."
He added: "The whole team need to work, not just the back five. If we get it right then we can go further up the league. We didn’t keep the ball today, that was our biggest problem."