Boxing - Narvaez, Kashtanov hold onto belts

Omar Narvaez retained his WBO super-flyweight title for the eighth time after stopping Hiroyuki Hisataka in round 10 in his native Argentina.

Boxing - Narvaez, Kashtanov hold onto belts

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Omar Narvaez

The 38-year-old veteran has now won 40 professional bouts after overpowering his Japanese challenger throughout most of the contest and weathering a tricky fifth round before triggering the stoppage with a relentless flurry.

Southpaw Narvaez almost always fights in his homeland these days, with the Hisataka win coming in his birthplace Chubut.

In other world title action at the weekend, Stanyslav Kashtanov also won via knockout in the 10th, defeating Jaime Barboza in his first title defence since last November to retain the WBA interim super-middleweight strap in Donetsk.

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