Dirado finally overhauled "Iron Lady" Hosszu after finishing second behind her in the 400m individual medley and third in the 200m individual medley.

Dirado, who won 4x200m freestyle relay gold in Rio, tracked front-runner Hosszu throughout, edging ahead in the final meters to win in 2min 05.99 seconds.

Hosszu took the silver in 2:06.05 and Canada's Hilary Caldwell claimed bronze in 2:07.54.

Hosszu, won the 100m backstroke along with the 200m and 400m medleys, was bidding to equal the record for the most gold medals won by a female swimmer in individual events at a single Olympics.

The only other woman to have achieved the feat was East Germany's Kristin Otto at Seoul in 1988.