Jazz Carlin has been known to have the knack for swimming her best in the National team more than she does in the International team.

Fortunately for her, this trend changed when she bagged a medal for being a runner-up at the Rio Olympics during the 400-meter freestyle coming behind the best swimmer in the world Katie Ledecky and yet again winning a medal at 2nd place in the 800-meter freestyle.

12. LEAH SMITH (USA)LEAH SMITH

Leah Smith is a great swimmer that the world should watch out for. She qualified for her first Olympics when she finished as a runner-up in both the 400 and 800-meter freestyle to the legendary Katie Ledecky in the 2015 World Championships.

She is a great asset to her team as she came in 3rd place in the 200 free trials, and helped her USA team win a gold at the World Championships 2015.

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