Name dropping: A few up-and-comers who may make mark in '20

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File-This July 26, 2019, file photo shows United States' Regan Smith reacting after her women's 200m backstroke semi final at the World Swimming Championships in Gwangju, South Korea. The teenager from Minnesota broke the world record in the 200 back at the world championships in South Korea in July. Smith turns 18 on Feb. 9. (AP Photo/Mark Schiefelbein, File)