WATCH: Tokyo Olympic Games: Day 15 key moments
Each day, ABC News will give you a roundup of key Olympic moments from the day's events in Tokyo, happening 13 hours ahead of U.S. Eastern Time. After a 12-month delay, the unprecedented 2020 Summer Olympics is taking place without fans or spectators and under a state of emergency due to the coronavirus pandemic.
Allyson Felix becomes most decorated American track athlete of all time
Allyson Felix won her 11th medal in the women’s 4x400m relay and has now become the most decorated American track and field athlete of all time, surpassing Carl Lewis' record of 10 medals. Felix and an all-star cast of Sydney McLaughlin, Dalilah Muhammad and Athing Mu blazed past the competition to win the gold in the 4x400m relay.
The 35-year-old sprinter won her 10th and 11th medal at the 2020 Tokyo Games, taking the bronze in the individual 400m.
MORE: Allyson Felix makes history with 11th career medal at the Tokyo Olympics
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Allyson Felix of Team United States competes in the Women' s 4 x 400m Relay Final on day fifteen of the Tokyo 2020 Olympic Games at Olympic Stadium on Aug. 7, 2021 in Tokyo, Japan.
Tasos Katopodis/UPI/Shutterstock
Team USA celebrates their gold medal win in the Women's 4x400m final at Olympic Stadium during the 2020 Summer Olympics in Tokyo, Japan on Aug. 7, 2021.
US men’s basketball wins 4th straight gold
The U.S. men’s basketball team defeated France 87-82 to bring home the gold medal for the fourth straight Olympics. The effort was led by Kevin Durant who had 29 points and secured his third gold medal, which tied Carmelo Anthony for the most gold in men's basketball. This is now Team USA’s 16th gold medal in basketball since 1936.
MORE: Captain America: Durant makes sure gold medal stays with US
Brian Snyder/Reuters
Kevin Durant of the United States drives in during the gold medal match against France on Aug. 7, 2021, in Saitama, Japan.
Aris Messinis/AFP via Getty Images
Team USA's players celebrate their victory at the end of the men's final basketball match between France and USA during the Tokyo 2020 Olympic Games at the Saitama Super Arena in Saitama on Aug. 7, 2021.
US sweeps the 4x400m relays, takes bronze in marathon
Directly after the U.S. women’s team took gold in the 4x400m relay, the men won in a similar dominating fashion, taking the gold in the last track event of the 2020 Olympic Games.
Earlier in the day U.S. runner Molly Seidel finished with the bronze in the marathon.
Lucy Nicholson/Reuters
Rai Benjamin of the United States crosses the line to win gold in the 4x400m relay on Aug. 7, 2021, in Tokyo, Japan.
Giuseppe Cacace/AFP via Getty Images
USA's Molly Seidel crosses the finish line of the women's marathon final during the Tokyo 2020 Olympic Games in Sapporo on Aug. 7, 2021.
COVID-19 cases at Olympics rise to 409, Tokyo continues reporting record number of cases
There were 22 newly confirmed cases of COVID-19 at the Tokyo Olympics on Saturday, all among personnel, contractors or media. The total now stands at 409, according to data released by the Tokyo 2020 organizing committee.
The surrounding city of Tokyo reported 4,566 new cases on Saturday, a new record for the third straight day. The seven-day average increased by 133.3%, according to data from the Tokyo metropolitan government.
Androniki Christodoulou/Reuters
People walk at a crossing in Shibuya shopping area, amid the coronavirus disease (COVID-19) outbreak in Tokyo, Japan, Aug. 7, 2021.
US women’s water polo wins gold
The U.S. women’s water polo team handily defeated Spain 14-5 to bring home the gold medal. Team USA's women have now won gold in three consecutive Olympic Games.
Mark Humphrey/AP Photo
United States' goalkeeper Ashleigh Johnson, center, leaps as players celebrate as time expires in the women's water polo gold medal match against Spain at the 2020 Summer Olympics, Aug. 7, 2021, in Tokyo, Japan.
Tom Pennington/Getty Images
Ashleigh Johnson of Team United States makes a save during the Women's Gold Medal match between Spain and the United States on day fifteen of the Tokyo 2020 Olympic Games at Tatsumi Water Polo Centre on Aug. 7, 2021 in Tokyo, Japan.
Nelly Korda takes home gold in golf
U.S. golfer Nelly Korda took home the gold with a one-shot victory, completing a U.S. sweep of stroke play in the Olympic Games. Xander Schauffele secured the gold for the men’s division last week.
Andy Wong/AP Photo
Nelly Korda, of the United States, celebrates after winning the gold medal on the 18th hole during the final round of the women's golf event at the 2020 Summer Olympics, Aug. 7, 2021, at the Kasumigaseki Country Club in Kawagoe, Japan.
US baseball loses to Japan, takes home silver
The U.S. baseball team was defeated by the host country’s team 2-0, but still brought home a silver medal from the 2020 Olympic Games. This was Japan's first gold medal in baseball, which was played in the Tokyo Olympics for the first time in 13 years.
Jae C. Hong/AP Photo
Japan's Tetsuto Yamada, right, scores past United States' Mark Kolozsvary on a single by Masataka Yoshida during the eight inning of the gold medal baseball game at the 2020 Summer Olympics, Aug. 7, 2021, in Yokohama, Japan.
Steph Chambers/Getty Images
Infielder Nick Allen #10 of Team United States walks off while players of Team Japan celebrate the gold following the gold medal game in the Tokyo 2020 Olympic Games on Aug. 7, 2021, in Yokohama, Japan.
More scenes from today's action:
Mike Blake/Reuters
Team Japan is seen in action during the group all-around qualifications for rhythmic gymnastics on Aug. 7, 2021, in Tokyo, Japan.
Peter Parks/AFP via Getty Images
Adrian Hegyvary and Gavin Hoover of the United States crash in the men's track cycling madison final during the Tokyo 2020 Olympic Games at Izu Velodrome in Izu, Japan, on Aug. 7, 2021.
Phil Noble/Reuters
Officials in protective face mask watch Yuliya Levchenko of Ukraine in action during the women's high jump in Aug. 7, 2021, in Tokyo, Japan.
Vincent Thian/AP Photo
Tareg Hamedi of Saudi Arabia, left, and Ivan Kvesic of Croatia compete in the men's kumite +75kg elimination round for karate at the 2020 Summer Olympics, Aug. 7, 2021, in Tokyo, Japan.
Fabrice Coffrini/AFP via Getty Images
Egypt's left back Ahmed Mohamed is challenged by Spain's centre back Raul Entrerrios during the men's bronze medal handball match on Aug. 7, 2021.
Lionel Bonaventure/AFP via Getty Images
Russia's Dina Averina competes in the individual all-around final of the Rhythmic Gymnastics event during Tokyo 2020 Olympic Games at Ariake Gymnastics centre in Tokyo, on Aug. 7, 2021.
Jewel Samad/AFP via Getty Images
Netherlands' Sifan Hassan reacts as she crosses the finish line to win the women's 10,000m final during the Tokyo 2020 Olympic Games at the Olympic Stadium in Tokyo on Aug. 7, 2021.
Frank Franklin Ii/AP Photo
Turkey's Busenaz Surmeneli, left, reacts after defeating China's Cu Hong in their women's welterweight 69-kg boxing gold medal match at the 2020 Summer Olympics, Aug. 7, 2021, in Tokyo, Japan.
Jack Guez/AFP via Getty Images
Japan's Takuto Otoguro celebrates his gold medal victory against Azerbaijan's Haji Aliyev in their men's freestyle 65kg wrestling final match during the Tokyo 2020 Olympic Games at the Makuhari Messe in Tokyo on Aug. 7, 2021.
Catch up on the best moments from the previous days' events
SLIDESHOW: The very best photos from the 2020 Olympic Games
MORE: Allyson Felix wins 10th Olympic medal: Key moments from Day 14 of the Olympic Games
MORE: Key moments from the Olympic Games: Day 13
MORE: Key moments from the Olympic Games: Day 12
SLIDESHOW: Tokyo Olympics Opening Ceremony
For more Olympics coverage, see: https://abcnews.go.com/Sports/Olympics