Buenos Aires, Argentina -- (Sports Network) - Omar Narvaez kept his WBO flyweight title with an 11th-round knockout of Omar Soto on Friday.

Making his 16th title defense, Narvaez (30-0-2, 12 KOs) dropped Soto (17-5-1) to the canvas with a barrage of punches in the eleventh.

Narvaez has held the belt since 2002.