Castellanos prepped at Archbishop McCarthy High School, where he was named Florida's Gatorade Player of the Year in 2010 after hitting .542 with six home runs, 41 RBIs and 22 stolen bases as a senior.
Growing up in Davie -- a short 15-minute drive to the Marlins' former home, Sun Life Stadium -- also made Castellanos a huge Marlins fan as a youngster.
"I don't really remember the 1997 series, because I was, like, 4 years old, but I was there," Castellanos told The Miami Herald last season. "I remember Bobby Bonilla lifting Jim Leyland up.
"I actually went to all the 2003 games. Alex Fernandez got me and my family tickets. I was there when Miguel [Cabrera] hit that opposite-field home run against [Roger] Clemens and then Alex Gonzalez hit the game-winning home run in extras. I was there for all of them."
Cash Kruth is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.