The athlete whose real first name is Eldrick is Tiger Woods
https://www.youtube.com/watch?v=cVDyjWKmXN4
The athlete whose real first name is Eldrick is Tiger Woods, not Sugar Ray Leonard, Magic Johnson, or Kareem Abdul-Jabbar. Tiger Woods, one of the most successful and renowned golfers in history, was born Eldrick Tont Woods but is universally known by his nickname “Tiger.” While Sugar Ray Leonard is a legendary boxer, Magic Johnson is a basketball icon, and Kareem Abdul-Jabbar is a basketball Hall of Famer, none of them have the given name Eldrick. Tiger Woods, however, gained fame and recognition under his chosen nickname, setting him apart from the other athletes listed and making him the correct answer to the question.