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In brief

First Posted: 11/23/2013 (AP) Russia's Evgeny Gradovich retained the IBF featherweight title when Australia's Billy Dib quit in the ninth round Sunday at The Venetian casino in Macau.
In a rematch of their March bout, Gradovich put Dib down in the sixth round and staggered him with a left hook in the eighth. Further punishment in the ninth prompted Dib's corner to ask the referee to stop the fight on the undercard of the bout between Brandon Rios and Manny Pacquiao.
Mexican heavyweight Andy Ruiz Jr. extended his unbeaten record when American opponent Tor Hamer quit after three rounds despite leading on the judges' scorecards. Ruiz retained his WBO intercontinental heavyweight belt and added the NABF title.
Zou Shiming, China's two-time Olympic gold medalist, improved his professional record to 3-0-0 with a unanimous points decision in his six-round flyweight bout against Mexico's Juan Toscano.
<a title="Associated Press" href="http://www.ap.org" class="url org fn">Associated Press</a>

Gradovich retains IBF feather title, beats Dib