Instead, the man found himself being knocked to the floor several times in quick succession.
The teenager met his match at the BX Fight Club – a scrappy underground fight club set up by two burly guys from the Bronx, New York City.
The club grew as a way to foster respect and redirect aggression among young men in the rougher sections of the city.
It began in an empty car park using traffic barricades as the ring boundary.
But the club is now a much more professional affair – with tournaments taking place in actual boxing rings.
In this throwback clip however, the 16-year-old, in green shorts, takes on his 25-year-old opponent as crowds wait behind aluminium gates.
Car park fight escalates as an onlooker joins in
More than five million people have watched the dramatic footage on the BX Fight Club YouTube channel – which has more than 70,000 subscribers.
Many were in disbelief about the younger fighter’s ability.
“16? What kind of man-child is that?” one viewer said.
And another said: “There are kids watching, is this a lovely family day out?”
Photo Credit: Gumtree South Africa