Giles Barnes was Derby's hero as they came from behind to beat West Brom. West Brom looked set for three points after taking the lead in the 26th minute when Richard Chaplow rounded keeper Stephen Bywater to score.
But Matt Oakley fired home from 25 yards after 69 minutes to draw Derby level after West Brom stood off.
And three minutes later 18-year-old Barnes rose to meet Morten Bisgaard's cross and head into the top corner from six yards to clinch Derby's win.
Derby boss Billy Davies on a post-match dizzy spell:
"I'm fine. I missed my lunch and felt I needed to get some food in me. I did feel dizzy but I had a couple of Jaffa Cakes and I was alright. "To be fair, the first 45 minutes left me dizzy. We are our own worst enemy.
"I'll have to talk to Uefa about getting games started at half-time. In the first half we looked nervous."
West Brom boss Tony Mowbray:
"Perhaps we were a bit naive at times and wasteful in front of goal but there are another 30 games to go and there's no need to be concerned. "We have got a very disappointed dressing room because the players know they didn't get what they deserved.
"I wouldn't knock the strikers, we were creating a lot of chances."
Derby: Bywater, Edworthy, Leacock, Michael Johnson, Camara, Bisgaard (Moore 90), Oakley, Seth Johnson (Smith 46), Barnes, Howard, Lupoli (Stead 59).
Subs Not Used: Grant, Bolder.
Booked: Camara, Howard.
Goals: Oakley 69, Barnes 72.
West Brom: Hoult, Watson, Perry, Curtis Davies, Albrechtsen, Gera (Hartson 88), Koumas, Chaplow, Greening, Ellington (Phillips 59), Kamara.
Subs Not Used: Steele, McShane, Wallwork.
Booked: Chaplow, Kamara.
Goals: Chaplow 26.
Att: 25,342.
Ref: P Walton (Northamptonshire).