The 31-year-old Frenchman Doumbe, a former two-time kickboxing champion, has a passionate fan base back home, but this was his first exposure to the international scene.
The TV cameras shifted to fans reacting inside the arena as Zebo lay flat on his back from Doumbe’s crushing left hook.
French football star Kylian Mbappe, backed by some of his PSG teammates, stood gaping agape in disbelief.
That day, PSG played a 0-0 tie 425 kilometers away at Clermont Foot, and after the game, Mbappe and his teammates took a trip back to it.