Dave Jones slammed his Sheffield Wednesday players despite their 4-2 victory at Oldham in the Capital One Cup first round.
The newly-promoted npower Championship side trailed 2-0 against their League One hosts, Jordan Slew and Jean-Yves Mvoto doing the early damage, meaning the Owls needed a half-time rocket from Jones before they sparked into action.
Chris O'Grady's brace, sandwiched betweeen goals from Jermain Johnson and Michail Antonio, sealed the comeback. But Jones said: "In the Championship we won't win many games from 2-0 down, if any at all. It's a hard league and, although we won, there's still a lot of work to do."
He added: "Some words were said at half-time and they'll remain private, but I asked them nicely to go out and start playing like Sheffield Wednesday. It was by far the worst we've played in my time at the club and I was surprised by it. They responded to what we said but, believe me, I'm still spitting feathers."
Disappointed Oldham boss Paul Dickov said: "We were excellent for most of the first half, but it has to be a 90-minute performance. I suppose it's better for this to happen now instead of in the league."
Sean O'Driscoll was happy with Nottingham Forest's performance as they overcame Football League new boys Fleetwood 1-0 thanks to a solitary Dexter Blackstock goal.
He said: "We got the goal and had a couple of half chances but to give them great credit they kept battling and we couldn't get the second goal we needed to kill them off. The result went to us but the plaudits go Fleetwood because they were excellent."
Micky Mellon was proud of his Cod Army players on their League Cup debut, saying: "A neutral watching the game would not have really known who was the Championship side on that performance and that is the biggest praise I can give my players."
Elsewhere, a new-look Preston shocked Huddersfield 2-0 to progress to the second round thanks to goals from Jack King and Nicky Wroe. Lilywhites boss Graham Westley said: "It was a good way for the new squad to start. They're good men, they're good people, they're good footballers, they're intelligent and they've only had six weeks to come together."
A disappointed Terriers boss Simon Grayson said: "We warned the players about what Preston would be like. They'd get in your faces, make it difficult for you, they'd leave their foot in, their elbows in, and they'll work you, and we didn't handle it."