For those who aren't too sure on who Flores is he's a 24 year old, though will be 25 come fight night, Nicaraguan fighter who made his debut at the age of 15, way back in 2006. He was a prodigious prospect who won his first 17 bouts, and claimed the IBF Latino Super Featherweight title, whilst still a teenage.
Since then he has gone 10-1-2 (4) with his most notable bout being his sole loss, a 2nd round KO at the hands of the exciting Miguel Berchelt in Mexico. Other than Berchelt it's hard to see too many opponents of value and in fact he's fought Moises Castro 3 times in the last few years, including twice last year.
Although young and hungry Flores does lack a signature win though is ranked #9 by the WBA, who amazing don't rank any Japanese contender such as Rikki Naito, Masayuki Ito or Kenichi Ogawa.
Whilst this bout hasn't yet been announced by Watanabe it is expected to be confirmed on Monday, when it's though Watanabe will announce the opponents of both Uchiyama and WBA Light Flyweight champion Ryoichi Taguchi (22-2-1, 9), who will be defending his title for the second time.