Ayala is coming off a career - best showing , having won a unanimous decision over Aaron Mitchell ( 27 - 1 - 1 ) to put his career back on track .
In Ayala , Derevyanchenko meets easily his toughest opponent to date .
Ayala is coming off a career - best showing , having won a unanimous decision over Aaron Mitchell ( 27 - 1 - 1 ) to put Ayala 's career back on track .
In Ayala , Derevyanchenko meets easily his toughest opponent to date .