Starlin DeJesus Castro (born March 24, 1990) is a Dominican professional baseball second baseman for the Miami Marlins of Major League Baseball (MLB). He previously played for the Chicago Cubs and New York Yankees. Castro is a four-time MLB All-Star and holds the record for most runs batted in in an MLB debut. In 2011, he led the National League in hits, becoming the youngest player to do so. He is listed at 6 foot 2 inches (1.88 meters) and 230 lbs (104 kg).
In 2009, Castro was named to the Florida State League All-Star team, and won MVP honors, going 4-for-4 with an inside-the-park home run in the game. He was also named All-Star Futures Game for the World Team. After the season, Castro was named the best prospect in Chicago's organization by Baseball America.
Castro was called up to the majors on May 7, 2010, from the Tennessee Smokies, the Cubs Double-A affiliate. He became the first major league player born in the 1990s.