Katie Ledecky of the United States swam to her second gold of the Games in the women’s 800 meters, a victory made all the more satisfying because it was at the expense of her rival Ariarne Titmus of Australia. Caeleb Dressel of the United States won his third gold medal, setting a world record in the 100-meter butterfly.
But there was disappointment for the U.S. swimmers in the new mixed medley relay: Ryan Murphy had the team in the lead after the opening backstroke leg, but they faded on the breaststroke and butterfly, all the way to last place at one point. Dressel’s freestyle anchor could pull them to only fifth. Britain won the event.
In track and field, Elaine Thompson-Herah defended her title in the 100-meter dash and led a Jamaican sweep of the podium with Shelly-Ann Fraser-Pryce and Shericka Jackson. Poland won the first mixed-gender 4×400 relay, followed by the Dominican Republic and the United States.
More mixed-gender events on Saturday: Spain won in trap shooting, with tiny San Marino in second and the United States third. Earlier, Alessandra Perilli had won San Marino’s first-ever medal in the individual event. Now she has two.
In the mixed triathlon relay, Britain beat the United States for gold, and France surprised Japan in the judo team competition.
The U.S. baseball team defeated South Korea, 4-2, and won its group.
Pablo Carreño Busta of Spain defeated Novak Djokovic to win the bronze in men’s tennis. Djokovic withdrew from his bronze medal mixed doubles match.
And no one bounced better than Ivan Litvinovich of Belarus in men’s trampoline; Dong Dong of China was second for his fourth career medal in the event.