By CompuBox

Late sub Jaime Munguia butchered Sadam Ali, landing 47% of his power shots, scoring four knockdowns and getting the stoppage in the fourth. Ali landed just 30 total punches to 59 for the new champ Munguia.

Jaime Munguia produced a stunning upset win over Sadam Ali to claim the WBO light-middleweight title Saturday.

The 21-year-old Mexican (29-0) dominated from the outset in New York before knocking out Ali (26-2)

in the fourth round.

Munguia was handed the fight on two weeks' notice after Liam Smith's withdrawal due to an allergic reaction.

He made the most of his opportunity, overpowering Ali from the beginning of the fight.

Ali was floored twice in the first round and again in the second as Munguia dominated.

Munguia was in complete control and it seemed only a matter of time before he landed the decisive blow, sending Ali to the canvas once more in the fourth round to end the fight.