Carlos Carvalhal said the result could have been different after the Owls lost 2-0 to Premiership side Stoke City in the quarter finals of the Capital One Cup.
Stoke scored either side of half-time with goals from Ibrahim Afellay and Phil Bardsley, with Wednesday being forced into changes during the contest due to injuries.
Carvalhal said: “On another day the result could have been different.
“We had some problems with players who couldn’t play here tonight.
“Then during the game we had some players who have picked up injuries which made things even more difficult.
“Their keeper didn’t have a lot to do tonight, but neither did Joe for us.
“It’s been a good run with the games against Newcastle and Arsenal, but our main focus must be the Championship.”
Owls fans were out in force at the Britannia, with over 4,000 making the Tuesday night trip to Stoke, and Carvalhal was more than happy with their contribution.
The head coach added: “Our fans were fantastic.
“They gave us an extra energy in the second half as we were kicking towards them, which is just what the team needed, so I was very happy with them.”
The Owls’ are back in action against Derby on Sunday afternoon in front of the Sky cameras at Hillsborough (1.15pm).