Japan qualified for both the men's and women's 4x100-meter medley relay swimming event at the 2020 Tokyo Olympics by advancing to their respective finals at the world championships on Sunday.
Japan finished third overall in the men's heats and eighth overall in the women's heats. The top 12 teams from the prelims of a relay event at the worlds automatically qualify for the 2020 Olympic Games.
The men's team of Ryosuke Irie, Yasuhiro Koseki, Naoki Mizunuma and Katsumi Nakamura combined for a time of 3 minutes, 32.34 seconds to finish behind Russia and the United States in the morning preliminary round.
The women's team, consisting of Natsumi Sakai, Reona Aoki, Hiroko Makino and Rika Omoto, finished in 3:59.87.