West Brom boss Ryan Mason spoke to BBC Radio WM following their 2-1 defeat at Watford.
"We got ourselves in a really good position, scored a good goal and I thought we had a lot of control in the first half hour or so," he said.
"The disappointing thing is to concede so quickly after scoring - that changes the feeling of the game. If we had got through to half-time, the feeling inside the stadium, and the feeling on the pitch, would have been different.
"In the second half, they had their best spell, were on the front foot, and for us it was about trying to get through that moment.