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Tadashi Mihara

Super Welterweight · Retired · Japan

Tadashi Mihara

Former world champion

At a glance

Born
March 30, 1955 (age 71)
Nationality
Japan
Birthplace
Gunma, Japan
Division
Super Welterweight
Height
5ft 10in (179 cm)
Stance
Orthodox
Pro debut
June 22, 1978
Retired
March 28, 1985

Story

Boxing Only · Updated Jul 8, 2026

Tadashi Mihara, a Japanese boxing prodigy, left his mark on the light middleweight division during his brief but impressive career. Born on March 30, 1955, in Gunma, Japan, Mihara's passion for boxing was ignited at a young age, and he quickly rose through the ranks to become one of the most promising fighters of his generation.

Mihara's love affair with the sport began when he was just a third-grader in high school. His natural talent and dedication were evident from the start, as he honed his skills and developed a reputation as a formidable competitor. In 1977, Mihara's hard work paid off when he claimed the title at the All-Japan Amateur Boxing Championships in the light middleweight division. His success continued at the university level, where he served as the Nihon University boxing club captain and secured the group title in the university league.

During his amateur career, Mihara amassed an impressive record of 28 wins, 15 of which were knockouts and 10 losses. This experience laid the foundation for his transition to the professional ranks, where he would shine.

Mihara's professional debut came in 1978, and he wasted no time making a name for himself. He claimed his first title in his fifth contest, defeating Jae-Keum Lim to secure the OPBF belt. Mihara went on to defend this title six times, showcasing his dominance and proving that he was a force to be reckoned with in the light middleweight division.

A pivotal moment in Mihara's career came on June 25, 1981, when he fought on the undercard of the Ayub Kalule vs. Sugar Ray Leonard bout at the Reliant Astrodome in Houston. Mihara secured a stunning fifth-round knockout victory, and with Leonard vacating the WBA world junior middleweight title after the event, Mihara found himself with a golden opportunity.

On November 7, 1981, Mihara faced off against Rocky Fratto (24-0-0) in Rochester, New York, for the vacant WBA world junior middleweight title. Mihara displayed his power and resilience in a closely contested battle, knocking Fratto down with a vicious right cross in the fourth round. Despite judge Harold Lederman scoring the fight a draw, Mihara emerged victorious by majority decision, claiming the world title and cementing his place in boxing history.

Impressed by Mihara's performance, Lederman remarked, "There's no doubt that he's got a good jaw. He really got tagged a couple of times. I thought Fratto was going to knock him out."

However, Mihara's reign as champion was short-lived. In his first title defence, he faced the formidable Davey Moore at the Tokyo Metropolitan Gymnasium on February 2, 1982. Mihara suffered a knockout loss in a shocking upset, relinquishing his world title. To make matters worse, Mihara began to struggle with chronic lumbago, which would plague him for the remainder of his career.

Undeterred by the setback, Mihara bounced back, capturing the Japanese junior middleweight title and successfully defending it six times until June 1984. He then returned the title and fought one last time in March 1985, defeating Tricky Kawaguchi unanimously before hanging up his gloves for good.

Tadashi Mihara's professional record stands at an impressive 24 wins, with 15 coming by knockout and just one loss. His impact on Japanese boxing cannot be overstated, as he paved the way for future generations of fighters and inspired countless young athletes to pursue their dreams in the ring.

World titles

  • WBASuper Welterweight1981 to 1982Former