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Giannis Antetokounmpo
The basketball player made history as the first Black flagbearer for Greece during the Opening Ceremony.
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Quincy Wilson
The track and field star, who turned 16 in January, "etched his name" in history, according to Team USA, when he became the youngest male athlete to make 4x400m relay squad.
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Hezly Rivera
As for the youngest athlete in any sport to make Team USA? That'll be Rivera, who turned 16 just weeks before she was selected to join the women's gymnastics team.