However , Warren lost in his first defense to Zhanat Zhakiyanov by split decision .
In a rematch with Payano on June 18 , 2016 , Warren gained revenge by winning both titles with a majority decision .
Warren lost in Warren 's first defense to Zhanat Zhakiyanov by split decision .
In a rematch with Payano on June 18 , 2016 , Warren gained revenge by winning both titles with a majority decision .