MACAU, China (AP) -- Evgeny Gradovich retained his IBF featherweight title after defeating Argentina's Mauricio Munoz by a unanimous decision on Saturday.
The 26-year-old Russian improved to 17-0.
On the same bill, Mexico's Juan Francisco Estrada also made a successful defense of his WBO-WBA flyweight titles, defeating Milan Melindo by a unanimous decision.
Estrada handed Melindo his first defeat in 29 fights, knocking down the down in the 11th round with a straight right hook.
China's two-time Olympic gold medalist Zou Shiming dominated Mexican teenager Jesus Ortega to win his second professional fight by a unanimous decision.
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