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GIANNIS ANTETOKOUNMPO The Real 'Greek Freak' Is MY 15-YEAR-OLD BRO!!

If you think 6'11" Milwaukee Bucks star Giannis Antetokounmpo is a problem in the NBA, you ain't seen nothing yet ... 'cause Giannis says his 15-year-old brother, Alex, is gonna be even better.

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