Tanaka, who had previously held the WBO Minimumweight title, set the tone from the opening round as he used his speed to befuddle Fuentes and land hard right hands up top as well as piercing jabs to the body. Fuentes had no real answer other than to stay there and take them whilst offering an occasional wild swing in return. The second round was marginally better for the Mexican as he had a few moments of his own, but it was another round where Tanaka's speed and accuracy was the key with the Mexican's successes, all early in the round, being over-shadowed by Tanaka's more consistent showing.
Sadly for Fuentes round 3 was a horror round as Tanaka began to not just out box and out speed him but also out fight him, forcing him on to the ropes and landing some massive shots to head and body. Although not quite a 10-8 round it was one where some judges might have leaned that way due to just how one sided things were becoming. It was the same again in round 4, when Fuentes looked totally out of his depth and seemed to be needing a miracle. That miracle was never to come and in round 5 Tanaka let his shots go, hurting Fuentes who backed up to the ropes and took a huge right before being taken down by a flurry of lightening quick shots. With Fuentes down,and having been beaten up, the referee quickly waved off the bout.
With the win Tanaka further cements his place as one of the hottest emerging talents in boxing. A 2-weight champion in just 8 fights and at the age of 21 his career has so much potential and he seems to be improving with every contest. As for Fuentes it's hard to see him bouncing back from a beat down like this.