Katerina Siniakova and Barbora Krejcikova extend their Grand Slam winning streak to 24 matches, including back-to-back Australian Open titles.
After their 4-1 win over Paraguay, the Samurai Blue shifted their focus to an encounter with world No. 1 Brazil.
Returning Japanese standout athletes from four years ago spark optimism for an even better showing at the Beijing Olympics.
The two-time Olympic hammer throw medalist will undergo a stem cell transplant as part of his medical treatment.