The Judo Grand Slam in Tyumen Russia marks the final tour event before August’s World Championships in Chelyabinsk.
Day one saw Olympic champion Sarah Menezes of Brazil dominate the under 48 kilo division.
The 24-year-old was in devastating form in the final and beat Japan’s Emi Yamagishi with an ippon after just 32 seconds.
Former world champion Misato Nakamura claimed the under 52 kilo gold.
The Japanese judoka returned to the top of the World Judo Tour medal podium for the first time since 2011 when she saw off the challenge of Abu Dhabi Grand Prix winner and home hope Yulia Ryzhova.
Canada’s Catherine Beauchemin-Pinard continued her fine form by winning the under 57 kilo title.
After winning in Ulaanbaatar last week the 20-year-old won back to back gold medals after defeating American Marti Malloy by a single shido
World number four Kana Abe frustrated the Russian contingent when she beat Ekaterina Valkova to lift the under 63 kilo crown.
Abe registered a perfect record as she won all four of her contests by ippon including the final which was settled after just 22 seconds.
World number one Charles Chibana tuned up nicely for the world championships next month when he captured the under 66 kilo gold.
Chibana won the final in style when he lifted japan’s Yuhei Rokugo with a powerful ura-nage for ippon.
Russia finally opened their gold medal account on day one when Denis Iartcev won the under 73 kilo title.
The 23-year-old edged Brazilian Marcelo Contini in a scrappy contest which was settled on shido penalties.