#OnThisDay in 2003, 16-year-old Lionel Messi made his official debut for FC Barcelona when he went in as a substitute in a frien…

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#OnThisDay in 2003, 16-year-old Lionel Messi made his official debut for FC Barcelona when he went in as a substitute in a friendly against Porto.

Messi has since become one of the greatest players ever, winning every major domestic trophy, including 7 Ballon d’Or awards.