The Nakazato gym fighter made his debut in March 2012 and has slowly made his way into the Japanese ranks, despite losses against the likes of Masayuki Ito and Hiroshige Osawa. Despite suffering a few losses Saka is in good form having strung together a trio of stoppage wins, including a 3rd round TKO win against the then unbeaten Ryuto Kyoguchi, in a fight that can be seen below.
Gutierrez on the other hand made his debut in January 2009 and has claimed a variety of minor titles, including the WBC Silver Super Bantamweight title. Among those he has beaten are Filipino fighter Jhon Gemino however despite his long unbeaten record he hasn't yet scored a major win, with the most notable victory being a stoppage over Salvador Sanchez.
(Image courtesy of boxrec.com)