Stuart Gray reflected on two key chances missed by Wednesday in the 2-0 defeat to Norwich on Monday.
With the game goalless in the first half, the Owls spurned opportunities through Lloyd Isgrove and Caolan Lavery that Gray said could have changed the game:
“This game is all about taking your chances and we didn’t take ours.
“We had two clear chances but didn’t trouble the keeper and had we taken one of them, we might well be talking about a different outcome to the game.
“But credit Norwich, they took their chances, they are a very good side and I think overall they deserved the win.”
The Owls’ head coach insisted Wednesday were not at their best at both ends of the pitch and demanded an improvement for the visit of Charlton on Saturday.
He added: “Our defending was not good enough today.
“We stood off them, we didn’t get our challenges in and you can’t allow a side like Norwich the kind of room we did on the ball.
“Football is a simple game when you get it right in both boxes and we didn’t do that today.
“I have said that to the players and I have told them I want to see a big improvement for Charlton on Saturday.”