Kaori Sakamoto, Mai Mihara and Mana Kawabe sweep the Challenge Cup women's event, while Shun Sato and Sota Yamamoto finish 1-2 in the men's.
After excelling at the Japan Junior Championships and two wins earlier this season, Shimada is the favorite to claim the Junior Grand Prix Final women's title.
Shimada holds a slim advantage over female rival Mone Chiba at the Japan Junior Championships, while Kataise is ahead by more than 11 points in the...
