Lydia Jacoby strikes gold in women’s 100 breaststroke, Naomi Osaka upset

a person swimming in a pool of water: Lydia Jacoby (USA) celebrates after winning the women's 100m breaststroke final during the Tokyo 2020 Olympic Summer Games at Tokyo Aquatics Centre.

Day four at the Tokyo Olympics will be headlined by one of the most anticipated events of 2021 — the women’s gymnastics team final.

However, an upset win for Alaskan teen Lydia Jacoby in the women’s 100-meter breaststroke provided an early highlight in Tuesday’s action. Jacoby edged U.S. teammate Lilly King, the defending champion in the event from the 2016 Games in Rio. King ended up getting bronze, one of three on the day for American swimmers.

Another upset occurred at the Ariake Tennis Park Centre Court as No. 2 seed and Olympic cauldron lighter Naomi Osaka lost in straight sets to Marketa Vondrousova 6-1, 6-4. Osaka had dominated in the first two round of the Games, but racked up 32 unforced errors in her loss on Tuesday.

After a not-so impressive qualifying round, the Simone Biles-led U.S. women’s gymnastics team will look to reclaim its status as heavy favorites and win a third consecutive team gold medal early Tuesday in the U.S. (6:45 a.m. ET).

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