Australia loses two judokas on day one

The Rio Olympics is over for two of Australia's youngest judokas.

Debutants Joshua Katz and Chloe Rayner lasted a combined 161 seconds before losing in the first round on day one of the Games.

Katz, 18, went down to Uzbekistan's Diyorbek Urozboev by ippon - a match-winning move in judo - in the men's under-60kg division.

Rayner, 19, was beaten by the same move by France's Laetitia Payet in her under-48kg contest.

Australia has five other judo exponents in the tournament, including Katz's older brother Nathan.