Aston Villa manager Tim Sherwood was "gutted" after his team threw away a two-goal lead to lose 3-2 to Leicester City at King Power Stadium on Sunday.
The Villans went ahead just before half-time through Jack Grealish, and Carles Gil doubled their advantage in the second half, but goals from Ritchie De Laet, Jamie Vardy, and Nathan Dyer completed a late turnaround for the Foxes.
"We turned it over stupidly," Sherwood said. "The first goal gives them the momentum and unfortunately we couldn't wrestle it back off them.
"The first goal was a killer because that gives them the lift. It always is. It was a calamity after that. The goals we conceded were shocking. We scored good goals but unfortunately it counts for nothing.
"With 30 minutes left, 2-0 up, the game should be dead and buried. But we made unforced errors and it has cost us the game. It was individual errors, which we need to stop happening."
While the result lifted Leicester up to second in the table, Villa are now down to 15th and without a win since opening day, but Sherwood was still able to take positives away from the performance.
"I think we played some good stuff at times," he added. "I'm always negative when we lose but I'm still realistic enough to know that we are making strides in the right direction. For me it's all about winning football matches and we haven't won another one today."