Demetrious Johnson avenges, knocks out Adriano Moraes to win flyweight title.

The event took place at Singapore Indoor Stadium in Singapore, and the main card aired on Amazon Prime Video at 10 p.m.

Demetrious Johnson is one of the best to ever do it.

The fight was a rematch after Moraes captured the flyweight belt over Johnson at ONE on TNT 1 last April.

Johnson avenged the only knockout loss of his career by returning the favor.

This time, Johnson struck in the fourth round and left no doubt.

Johnson displayed virtually every aspect of his MMA game against Moraes (20-4) in the rematch. 

Demetrious Johnson has proven once again why he is one of the best to ever step into the cage.