Career
He made his first defense by first-round knockout, and retained his title in his second defense with a draw, but lost to Clemente Sanchez in May, 1972. Shibata made one defense in Japan before returning to the United States to fight Ben Villaflor again for his second defense. Shibata lost by knockout less than 2 minutes into the first round to lose his second world title.
He attempted another comeback, but announced his retirement in 1977.
His record was 47-6-3 (25 KOs). Shibata was a short and speedy fighter, who took advantage of even the slightest openings to thrown in a flurry of punches.
However, he also had a very weak chin, and was very susceptible to counter punches. Five of his six career losses were by knockout.