Wednesday’s highlight >> In the men’s 400 meters, Quincy Hall became the latest American runner to win gold with a stunning comeback. Hall passed three runners after the final turn and ran the fourth-fastest time ever in the event at 43.40 seconds. Michael Norman, a former standout at Vista Murrieta High School in Murrieta and USC, finished eighth.

What to watch today >> Highlights include the U.S. women’s water polo team in the semifinals vs. Australia (10:30 a.m., USA), the U.S. men’s basketball team in the semifinals vs. Serbia (11:45 a.m., USA), and the men’s 200-meter final in track and field, where Noah Lyles seeks his second gold medal (11:30 a.m., NBC).

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