Sheffield Wednesday head coach Carlos Carvalhal says the Hillsborough roar could provide the difference when Aston Villa provide the opposition for the Owls season kick-off.
Relegated from the Premier League, Villa provide a stern test of Wednesday's promotion chasing credentials on Sunday with Roberto Di Matteo, a Champions League winner as a boss with Chelsea, now at the helm.
They have also splashed out to bring Ross McCormack to Villa Park, a proven Championship goalscorer.
However, while Carvalhal recognises the talents held by Villa, he believes they should be just as worried about Wednesday, on the pitch and in the stands.
"(Aston Villa) have a strong side and a coach that won the Champions League a few years ago," said Carvalhal. "They have a good coach, good players, a good team, we know that.
"What we must do in these situations is act strong like a team, play with dynamic. We have quality players also, but we have something that they can't have and that is, on Sunday the 28,000 (fans) will be with us. They can give us a lot of energy and we believe that can make a big difference. My appeal again to the fans is go and support our team, in the moments they make mistakes we will see the answer.
"We understand we are playing against a strong team with very good abilities but we are sure they will play against a good team also."