Tom Goldman

Track and field is set to dominate the last week of the Olympics, and so is the art and science of timing. Who are the people, and what are the machines behind official timing? We find out.

American swimmer Katie Ledecky has had a solid Olympics, though not as good as she'd hoped for. She dominated the 2016 Rio de Janeiro Games but hadn't had that same level of success in Tokyo.

The Serbian star was beaten in the men's tennis semifinal by Germany's Alexander Zverev. It means Djokovic can't make history by winning all four major tournaments and Olympic gold in a single year.

The U.S. is once again the Olympic champion in women's individual all-around gymnastics. Despite the absence of the superstar Simone Biles, Sunisa Lee kept the American streak alive.

When Simone Biles withdrew during the women's gymnastics team final following her vault on Sunday, she said she wasn't physically injured but suffered from a phenomenon called "the twisties."

Simone Biles withdrew from the event as she continues to work through what she calls mental health challenges. Biles acknowledges suffering from a phenomenon called: the twisties.

The two-time world champion came into the Tokyo Olympics as the gold medal favorite. Instead, he tested positive for the coronavirus and is isolating in Tokyo.

American swimmer Katie Ledecky's legend could grow by a mile on Wednesday. She's scheduled to race in two finals, less than 90 minutes apart, with a total distance of more than a mile.

Simone Biles pulled out of the women's gymnastics Olympics team finals competition for mental health reasons. A winner of five Olympic medals, Biles' reason was the pressure she carries.

Osaka has been the face of these Olympics and was chosen to light the cauldron in the opening ceremony. She easily won her first two tennis matches but lost in the third round.

New York City announced that government workers, including teachers and police, must be vaccinated by mid-September. Those who refuse will have to wear masks indoors and submit to weekly testing.

The men's basketball team is off to a rocky start at the Olympics, after losing to France. Since 1992, the U.S. men's team has largely dominated at the Olympics. The team looks vulnerable now.

World #1 Jon Rahm of Spain and #6 Bryson DeChambeau of the U.S. each tested positive for the coronavirus before leaving for Tokyo. The stunning news rocked the golf world.

The Summer Olympics are officially underway following yesterday's opening ceremony in Tokyo, a year after they were originally scheduled. COVID restrictions mean fans can't watch events in-person.

For months, polls have shown most Japanese citizens don't want the Olympics in Japan. Cost overruns and a COVID-19 surge have led to street protests. Now activists are facing the games' inevitability.

The fanfare and celebration unfolded in a virtually empty stadium, as Japanese protesters gathered nearby to register their discontent over the world's largest sports event.

As coronavirus cases continue to surge in Tokyo — both around the capital city and in the Olympic Village, public polls in Japan show overwhelming opposition to hosting the Games during the pandemic.

Competition got underway Wednesday in Tokyo for the pandemic-delayed Summer Olympics — two days before the Opening Ceremony. Participants are streaming into Japan under heightened COVID-19 concerns.

Softball returns to the Olympics after a 13-year absence. But it won't be around for long. It's not on the schedule at the 2024 Games though athletes are hoping it'll make a return in 2028.

Major League Baseball's All-Star game is tonight and one of the biggest stars this season is Japan's Shohei Ohtani. He's a dominant pitcher and hitter — leading the league in home runs.