Wilder said: "We are disappointed. The narrative before by everyone is how many are Liverpool going to win by, even the most optimistic Sheffield United fan would not have expected us to go deep into the game.
"In possession they dominated, they dominate everybody, but we hung on in there. We had good opportunties, we should be in front after five minutes - we may have poked the bear - but we showed good qualities.
"There is everything to play for. From a manager's point of view, we want to know what we are getting from the team, over the last three games I know I am getting a competitive, well-structured team. We've got beaten, but there is a manner of going about it.
"We got done by a world class goal. In the last 15 minutes, you saw the power of the Premier League, and our achilles heel has been conceding late goals. We had players going down with cramp, that is the Premier League punishing you."