It was another good day for Japan, China, and the United States on the 12th day of the Rio Olympics as each country asserted dominance in their favored sports on August 17.
Rio Olympics, Day 12

1
Russia's Darya Klishina competes in the women's long-jump final.

2
Third-placed Kristi Castlin (left to right), first-placed Brianna Rollins, and second-placed Nia Ali of the United States stand together after the women's 100-meter hurdles final.

3
Laura Ludwig of Germany competes in the women's beach-volleyball final against Brazil, which Germany won.

4
Kazakhstan's Daniyar Yeleussinov defeated Uzbekistan's Shakhram Giyasov to win the welterweight Olympic title, racking up Kazakhstan's fourth consecutive gold medal in the event.