Luis Nery lands a left on Shinsuke Yamanaka during Augusts WBC world title fight in Tokyo. Photo: Yuta Omori/Kyodo News via AP

TOKYO - Japan's Shinsuke Yamanaka will get a chance to reclaim the World Boxing Council (WBC) bantamweight title from Luis Nery after the WBC ordered an immediate rematch between the fighters following a doping investigation concerning the Mexican.

Nery (24-0) scored a fourth round technical knockout in the August 15 bout in Tokyo, but has since been under investigation after an out-of-competition sample tested positive for the banned substance Zilpaterol.

Nery and his camp denied the boxer had taken any performance-enhancing drugs and did not request a B sample analysis, the WBC said.

"...the WBC cannot make a determination with sufficient certainty as to whether Mr Nery's adverse finding was the result of intentional ingestion of a banned substance to improve performance," the governing body said in a statement.

"The WBC hereby orders an immediate rematch between Mr Nery and Sinshuke Yamanaka..." it added, without changing the result of the original bout.

Yamanaka's promoters had earlier said the 35-year-old would quit boxing if denied a chance to fight Nery again after losing his first professional fight to the Mexican in his 13th title defence.

"I've been thinking that I don't want to end my career," Yamanaka (27-1-2) told Kyodo news. "I want to get back at him."

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