JRA jockey Seina Imamura becomes the first female jockey to win a G1, capturing the Oaks with Juuryoku Pierrot

Seina Imamura won the 87th Yushun Himba (Oaks) aboard Juuryoku Pierrot on May 24, 2026.

The 5th-favorite horse delivered an upset, giving Imamura the victory in a major classic race.

Imamura became the first female JRA-licensed jockey to win a Grade 1 title, a historic milestone for Japanese racing.