The world title opponent of England's Dalton Smith - WBC super-lightweight champion Subriel Matias - has failed a drugs test.

Puerta Rican Matias was scheduled to fight against Sheffield's Dalton on January 10 in Brooklyn, New York.

It was revealed on Friday that Matias (23-2, 22 KOs) tested positive for a banned substance in a Voluntary Anti-Doping Association test, reported to be performance-enhancing drug ostarine.

"The WBC has received notification from VADA about an adverse finding from a test performed by WBC super-lightweight champion Subriel Matias," WBC president Mauricio Sulaiman said.

"The WBC has begun the investigation process as per the Clean Boxing Program protocol. I have spoken to our champion Subriel and his Promoter Mr Orengo, and they have expressed their absolute a

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