Sheffield United boss Chris Wilder was unhappy with their performance for defeat to Southampton.
Saints summer signing Moussa Djenepo scored the deciding goal as he brilliantly weaved through the Blades defence before firing home midway through the second half.
But prior to falling behind, the hosts saw a goal ruled out for offside by the video assistant referee when Oliver McBurnie thought he had put them in front shortly after the break.
Wilder said: "I was unhappy with the first half performance because it wasn't us, was not us but that is our performance today.
"It's risk and reward, the goal we conceded is nothing to do with shape or tactics, it is a ball given away in the middle of the park.
"We are an open side, that's why we created 17 chances and should have scored, no doubt about it."
