The two teams had plenty of off-pitch drama to add to contend with amid their battle on the pitch following the infamous Spygate scandal earlier this season.
Leeds boss Marcelo Bielsa admitted to sending members of his backroom staff to secretly gather information on Lampard’s Derby team – only for one of his employees to be caught outside the Rams’ training ground.
That caused a dramatic fall-out between the two managers as the pair, pundits and players alike all waded in to offer their view on the morals of the situation.
And Whites fans harked back to that incident with a creative chant mocking Derby manager Frank Lampard after they won the first leg 1-0 at Pride Park last week.
To the tune of Oasis’ ‘Stop Crying Your Heart Out’, Leeds fans sang: “All of the spies are hidden away, just try not to worry, you’ll beat us some day. We beat you at home, we beat you away, stop crying Frank Lampard.”
However, the Rams claimed the sweetest possible revenge as they became the first team ever to lose the first leg of a Championship play-off semi-final at home and still progress to the final.
Substitute Jack Marriott scored twice added to goals from loan duo Mason Mount and Harry Wilson as the Midlands club secured a Wembley showdown with Aston Villa for the prize of a Premier League return.
And in addition to the Derby players taking an opportunity to snipe back at the Leeds fans as they celebrated in front of the away supporters mimicking looking through a pair of binoculars similar to Mateusz Klich’s celebration back in January, so did the club’s official Twitter account.
In a one-worded tweet captioned, ‘Mood’, the tweet showed a video of one of the Derby press team screen recording from their iPhone.
The unidentified admin then swapped from Twitter to iTunes to play the same Oasis song Leeds fans used to laugh at Lampard, with Derby fans and fans of other teams alike all lapping up the joke in the replies.
Several of Derby’s players also took a chance to hit back at Leeds, with goalscorers Wilson and Mount’s social media posts including: “I spy with my little eye something beginning with W.”
Derby’s Duane Holmes also shared a video on Twitter – which was shared by the verified club account – of Lampard and his players leading a rendition of Leeds’ chant.
The manager even laughingly pretended to wipe away tears as he sang the final line as Derby got the last laugh on Leeds, beating them for the first time in what was their final of four meetings this season.
Asked about whether the result felt even sweeter after the match because of who it was against, Lampard told Sky Sports cameras: “Maybe. I’m not going to lie maybe it is.
“Because I’ve heard a lot of people saying that we’re crying about Spygate. I haven’t thought about Spygate for a long time.
“We were able to prepare for this game, we were prepared and we got a result.”
Derby now face Aston Villa at Wembley in the play-off final on May 27.