Chris O'Grady headed home after 73 minutes, his goal was enough to secure a 1-0 victory for Sheffield Wednesday who closed the gap to two points with the Blades having some advantage of two games in hand.
"We're bitterly disappointed but we're still in a very strong position. We've got a tough match coming up against Scunthorpe on Wednesday night and we've got to try and get back to winning ways now," said Wilson.
"It was a typical derby game and there were a few chances for each team. I thought we defended very well. The lads did well in that respect. But we opened a little door for them and they took the opportunity. Sheffield derbies are special days. The atmosphere is absolutely fantastic and they're games you want to be involved in."