Gary Megson described Sheffield Wednesday's 1-0 victory over Sheffield United on Sunday as the biggest result of his managerial career.
Chris O'Grady's 73rd-minute header settled the Steel City derby at Hillsborough and saw the Owls climb up to third in the League One table and to within two points of their neighbours.
"I've had some results at other clubs which were hugely important but no game has ever meant more to me than beating Sheffield United in a derby game," said Megson.
"The tempo, the battling and the scrapping was fantastic. I thought it was a fantastic performance from us in terms of how to win a game. We played it properly and I don't think anybody could have asked for more. The second-half was nigh-on one-way traffic.
"It was a marvellous goal. Chris has his critics. He doesn't score loads of goals but you wouldn't want to play against him every week."
Megson added: "We've got a together dressing-room. I push these people like they've never been pushed in their careers. There's a great deal of honest and pride from them. They know how much it means to me as a Sheffielder to win that game."