Leeds United vs Manchester United - there are few, if any, clashes in the English game that evoke quite the same level of emotion and drama.
For the longest of times, the Whites and the Reds have been embroiled in a fiery feud that has seen more than its fair share of incident and tension, and on Sunday, the next chapter of the heated saga will be written at Elland Road.
Leeds will be desperate to avoid the kind of humiliation that they suffered in their 5-1 opening day defeat at Old Trafford earlier in the season, and they come up against a Man United side who have looked less than assured in recent weeks.
Regardless of the result, however, one thing that is guaranteed is plenty of passion - and maybe just a dash of confrontation too.
With that in mind, we’ve looked back at some of the most famous controversies that have marked the fixture in years gone by...
7. Smith breaks transfer promise
Smith’s departure arguably stung more than Ferdinand’s, purely because of his status as a local hero who had previously sworn he would never make the move. The forward left Leeds after their relegation, and was branded ‘Judas’ by many upset fans. (Photo by John Peters/Manchester United via Getty Images) | Manchester United via Getty Imag
8. Beckford shocks Old Trafford
Not necessarily controversial in a conventional sense, but Leeds’ shock 1-0 FA Cup triumph at Old Trafford back in 2010 shook the Reds to their core and sparked quite the inquest. To this day, Jermaine Beckford is still a legend among the Elland Road faithful. (Photo by PAUL ELLIS/AFP via Getty Images) | AFP via Getty Images
9. VAR denies Leeds
Proof that there’s still controversy in the old rivalry yet, Leeds were denied a famous win over the Reds in April of last year when VAR failed to award them a penalty for a fairly blatant Luke Shaw hand ball. The match ended 1-1, and even Paul Scholes admitted that the Whites had been hard done by. (Photo by Jon Super - Pool/Getty Images) | Getty Images