There also was a party-atmosphere at Huddersfield Town back in 2014.
Best 15 minutes of the club's history
Following a four-game unbeaten run, Martin O'Neil's men travelled to Pride Park in impressive form.
They got off to the perfect start when Emile Heskey headed Steve Guppy's cross after 90 seconds.
It was 2-0 46 seconds later, when a misplaced pass led to Heskey squaring for Muzzy Izzet to head past Mart Poom, to the disgust of the home fans.
On eight minutes, Heskey made it 3-0 when he headed another Guppy cross into the net.
Derby managed to keep the ball out of their net for seven minutes, only for Ian Marshall to score another header pat Poom.
Surprisingly, no more goals were scored in the game and the damage was done in the opening quarter of an hour.
A step closer to safety
Derby travelled to the Walkers Stadium aiming to secure their play-off position, whilst the Foxes needed three points to stay up.
Labelled one of the best performances of the season from Craig Levein's men, Danny Tiatto and Dion Dublin both missed great chances in the first-half.
The winner came from top goalscorer, David Connolly, after Tiatto's lifted ball provided the poacher with a great opportunity.
Terriers win edges Foxes closer to 100 points
Following being crowned champions four days earlier, Nigel Pearson's men travelled to Huddersfield Town with the target of reaching 100 points.
Matty James struck the crossbar before Gary Taylor-Fletcher's right-footed strike beat Alex Smithies to open the scoring against his former club.
Adam Hamill missed a glorious chance for the home side after Sean Scannell's good work on the right ended with Hamill's strike being blocked off the line by Liam Moore.
Foxes skipper, Wes Morgan, confirmed the victory when he bundled in a free-kick in front of the travelling City fans.