More on Ninomiya...
Career Highlights
DOUBLES
Winner (1): 2016 - Tokyo (International) (w/Aoyama).
Finalist (5): 2018 - Hobart (w/L.Kichenok), Roland Garros (w/Hozumi), Hiroshima (w/Kato); 2017 - Kuala Lumpur (w/Melichar); 2016 - Nanchang (w/Aoyama).