He said: "Michail Antonio was taken out and we felt we should have had a penalty. The referee got the big decision wrong.
"When Jermaine Beckford came off the field with 15 minutes left I thought we had done three-quarters of the job.
"We felt the last 20 minutes would be a good period to win the game so it was disappointing to concede a goal just after Beckford was substituted.
"We switched off, maybe thinking we had done the job, but I couldn't fault the commitment of the players. Although we missed Morgan Schneiderlin's composure in midfield, we showed we are not far behind Leeds."