For years, the United States and Australia have duked it out for dominance in the Olympic swimming pool. Now, with U.S. legend Michael Phelps retired and Katie Ledecky slipping in some races, it might be Australia’s turn at the top of the podium.

The Washington Post’s Ava Wallace speaks with Post reporters Dave Sheinin and Rick Maese about the newest stars in the pool this year and which races not to miss. Plus, a first-time U.S. Olympian on the men's 3x3 team, Kareem Maddox, tells his story about what it took to get to Paris.

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Today’s show was produced and mixed by Ted Muldoon. It was edited by Joe Tone.