He won the silver medal in the Lightweight (75 - 81 kg) division at the 1974 British Commonwealth Games.

There he was stopped in the first round of the Lightweight (60 kg) division by Azerbaijan's Rovshan Huseynov.

There he was stopped in the first round of the Lightweight (60 kg) division by Kazakhstan's eventual bronze medalist Serik Yeleuov.

There he was outscored in the first round of the Lightweight (60 kg) division by America's Vicente Escobedo.

He won the gold medal in the Lightweight(71 kg) division at the 1995 World Judo Championships.

There he was eliminated in the second round of the Men's Lightweight (-60 kg) division by István Juhász of Hungary.

There he won the silver medal in the Men's Lightweight (- 71 kg) division after being defeated in the final by France's Marc Alexandre.

She claimed the bronze medal in the Women's Lightweight (- 56 kg) division at the 1992 Summer Olympics in Barcelona, Spain.

Dobashi competed in the Men's Lightweight (- 60 kg) division.

His best result was a fifth place tie at the 1984 Summer Olympics in the Men's Lightweight (- 60 kg) division.