It is understood Saunders wasn't at the weigh-in, but still managed to get involved while the WBC heavyweight champion and his entourage were tucking into some late-night chicken.
A video appeared online allegedly showing the world middleweight king - who earlier uploaded a picture of him in a similar shirt to the one seen - dashing for the exit door after executing his cheeky plan.
Wilder and his crew dashed after his rival and one of the 32-year-old's entourages hilariously slips over as tables were sent flying.
Boxer Deontay Wilder confronts Billy Joe Saunders for calling him a 'racist c***' which comes to blows in a Nando's brawl in Belfast
Billy Joe Saunders reacts to the Nando’s chicken incident with Deontay Wilder and his entourage
The carnage continued onto the street as onlookers rushed to watch the bizarre action unfold.
Wilder and Fury have an ongoing rivalry that is set to come to a head if the pair agree a date to scrap later this year.
The 'Bronze Bomber' is scheduled to be ringside for Fury's fight at Windsor Park on Saturday night to get a closer look at his future opponent.
Deontay Wilder clashes with Tyson Fury camp during weigh-in in Belfast