Olympic newsletter: Summer doubles, Felix goes for two tennis medals

This is an excerpt from CBC Sports' daily newsletter, The Buzzer. Subscribe here to get the latest on the Paris Olympics in your inbox every day.

Summer McIntosh swam to her second gold and third medal of the Paris Games today, winning her other best event. And she's not done yet.

Neither is Felix Auger-Aliassime, who stayed in the hunt for two tennis podiums, while Wyatt Sanford clinched the country's first Olympic boxing medal in 28 years. Plus, American superstar Simone Biles reclaimed the biggest title in her sport.

More on all that below, plus a look ahead to Canada's medal chances on Friday and the first day of track and field.

For the second time this week, the 17-year-old swimming sensation went into an event as the heavy favourite and delivered a commanding performance to win gold.

On Monday, McIntosh won the women's 400m individual medley by almost six seconds. Today, she let defending 200m butterfly champion Zhang Yufei burn herself out before beating American Regan Smith by a body length to break Zhang's Olympic record. Zhang, one of the Chinese swimmers who reportedly tested positive for a banned drug before the Tokyo Games but was still allowed to compete, limped in for the bronze.

McIntosh became the first Canadian woman to win multiple swimming gold medals at a single Olympic Games. Even sweeter, the 200m butterfly is the same event her mom, Jill, swam in at the 1984 Olympics in Los Angeles, placing ninth.

About 90 minutes after her victory, Summer had a chance to add her fourth medal in the women's 4x200m freestyle relay. She made up ground when it was her turn, but the Canadian team finished fourth. Australia won gold and the United States took silver to give Katie Ledecky her 13th Olympic medal. Read