Teenager Satoshi Ishii scored a decisive point in the dying seconds of the championship final to beat Olympic and world champion Keiji Suzuki and become the youngest judoka to win the Japanese national title on Saturday.

Kokushikan University sophomore Ishii delivered an "ouchigari" inner-thigh sweep with six seconds left to topple Suzuki for the only point in the final when their match appeared headed for overtime at the Nippon Budokan.

The victory made Ishii the youngest winner in the open-weight championship at 19 years and four months, breaking the record set by Yasuhiro Yamashita who won the national crown in 1977 at 19 years and 10 months.

Yamashita went on to win nine straight national titles and become an Olympic champion at the 1984 Los Angeles Games.