Nottingham Forest battled back from a goal behind to see off Derby County 2-1 this afternoon and claim the East Midlands bragging rights.
The Rams found themselves ahead at the break courtesy of Henri Lansbury's 16th-minute own goal at the iPro Stadium, although goals from Britt Assombalonga and Ben Osborn in the final 15 minutes turned the game on its head.
It means a first victory since November for Forest, while the hosts miss out on the chance to climb to the summit of the division.
Relive how the game unfolded with Sports Mole's live text coverage below.
DERBY COUNTY STARTING XI: Grant, Christie, Keogh, Buxton, Forsyth, Mascarell, Hughes, Bryson, Ward, Russell, Martin
NOTTINGHAM FOREST STARTING XI: De Vries, Lichaj, Wilson, Hobbs, Kane, Antonio, Gardner, Tesche, Osborn, Lansbury, Assombalonga
DERBY COUNTY SUBS: Roos, L Naylor, Shotton, Hendrick, Calero, Bennett, Bent
NOTTINGHAM FOREST SUBS: Darlow, Lascelles, Paterson, McLaughlin, Vaughan, Burke, Veldwijk
WARM-UP: #DCFC's players complete their warm up ahead of #DCFCvNFFC. Kick off at the #iProStadium is 15 minutes away pic.twitter.com/GZ2gIsENtj
— Derby County (@dcfcofficial) January 17, 2015
1 - Henri Lansbury's own goal was Nottingham Forest's first in any competition since November 2012 (Ward v Leicester). Tricky.
— OptaJoe (@OptaJoe) January 17, 2015
© Getty Images
72' Update: There are 2,645 Forest fans in today's attendance of 32,705. Thank you #NFFC fans for your tremendous support (1-0)
— Nottingham Forest FC (@Official_NFFC) January 17, 2015