Jim Magilton accused his Queens Park Rangers players of complacency after losing 2-0 at Doncaster.
The Rangers boss has demanded they up their workrate again ahead of Saturday's match with Coventry at Loftus Road.
He said: "We looked like we had lads who had been reading nice things about themselves. But these lads are playing for me, so I can't be too hard on them. It's a lesson learned. We've got a big week ahead of us."
While Rangers struggled it was a good weekend for Heidar Helguson, who is on loan at Watford from QPR as he scored twice in a 3-0 win over Scunthorpe.
Watford are now eighth in the Championship and manager Malky Mackay said: "To score three goals, keep a clean sheet, and another three points is certainly very pleasing."
Neil Warnock hailed Darren Ambrose after he gave Crystal Palace the lead in their 1-1 draw at Coventry, sweeping in a low cross from Freddie Sears.
The Palace manager said: "Darren is in good form but I think there is even more to come from him."
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