Key moments from the Olympic Games: Day 7

Here's what you missed from Day 7 of the 2020 Summer Olympics in Tokyo.

US swimming brings in pair of silvers, men's team draws attention out of the pool

U.S. swimmers Lilly King and Annie Lazor finished second and third in the 200m breaststroke, an admirable finish for the swimmers who were bested by a world-record setting effort by South Africa's Tatjana Schoenmaker.

Team USA's Ryan Murphy also secured a silver medal in the 200m backstroke, but garnered more attention after he then suggested that the race was tainted by doping, according to The Associated Press.

Murphy's teammate Michael Andrew was notably without a mask after his fifth place finish, and after the U.S. Olympic and Paralympic Committee said he violated protocol, they later reversed their decision, according to USA Today.

US Women's Soccer defeats Netherlands in dramatic shootout

Team USA's women’s soccer team moved to the semifinals after a win over the Netherlands in a shootout. The match was tied 2-2 through regular period and two overtimes before winning 4-2 in the shootout. The U.S. team will face Canada next in the semifinals.

COVID-19 cases at Tokyo Olympics rise to 225, Japan extends state of emergency

There were 27 newly confirmed cases of COVID-19 among people at the Tokyo Olympics on Friday, including two athletes staying at the Olympic Village. The total now stands at 225, according to data released by the Tokyo 2020 organizing committee.

The surrounding city of Tokyo reported 3,300 new cases on Friday, a 7-day average increase of 180.5%, according to data released by the Tokyo metropolitan government. Japan has extended its state of emergency to three of Tokyo's surrounding prefectures.

US BMX rider Connor Fields taken to hospital after crash

Connor fields was taken off the track in a stretcher after a brutal crash on the first turn of the men’s finals. Fields was taken to the hospital where he is now awake, according to USA Today .

Track and field events get underway

The 2020 Olympics’ track and field events began with a fast start today; six women finished the 100m qualifying round under 11 seconds. Ethiopia’s Selemon Barega won the first gold medal of the 2020 Games track events, leading the field in the men’s 10,000m.

US women’s basketball extends win streak to 51

Team USA’s women’s basketball team increased their win streak to 51 with an 86-69 win to the host country’s team. The effort was led by A’ja Wilson who scored 20 points and Breanna Stewart who ended with 15. The team has one game left in the group round.

Djokovic loses in semifinals, Golden Slam dream over

Serbia's Novak Djokovic lost to Alexander Zverev 6-1, 3-6, 1-6 in the semifinals and with the loss also went his hopes of achieving the Golden Slam. A Golden Slam is accomplished by winning all four majors and winning the Olympics all in the same year. The feat has only been achieved by Steffi Graf in 1988.

Mixed-gender relays make debut at Olympics

The first ever mixed-gender relays made their debut at the 2020 games in swimming on Thursday and track today. In the first mixed-gender track event, the 4x100, teams were able to decide which leg their athletes would run, leading to men and women running against each other in the same leg.

Similarly men and women swam against each other in the 4x100m medley, which was topped by Britain and followed by Team USA.

More scenes from today's action:

Catch up on the best moments from the previous days' events

For more Olympics coverage, see: https://abcnews.go.com/Sports/Olympics