This was anything but the day Japan expected on Saturday, the first day of the judo competition at the 17th Asian Games.

Mongolia walked off with two of the four gold medals on offer, with Misato Nakamura defending her title in the women's 52-kg class to take the only top podium spot for her country as the four-day competition got underway at Dowon Gymnasium.

Nakamura, who made comeback from surgery on her left knee two years ago, scored an ippon against Gulbadam Babamuratova of Turkmenistan in the final for the Japanese delegation's first gold medal of the 16-day event.