Miguel Ángel Castro is a Dominican professional baseball pitcher for the Arizona Diamondbacks of Major League Baseball (MLB). He has previously played in MLB for the Toronto Blue Jays, Colorado Rockies, Baltimore Orioles, New York Mets and New York Yankees. Castro signed with the Blue Jays as an international free agent in 2012, and made his MLB debut in 2015.

The Arizona Diamondbacks are an American professional baseball team based in Phoenix, Arizona. The Diamondbacks compete in Major League Baseball (MLB) as a member of the National League (NL) West Division. The franchise was established on March 9, 1995, and began play in 1998 as an expansion team. The team plays its home games at Chase Field. Along with the Tampa Bay Rays, the Diamondbacks are one of the newest teams in MLB and are the youngest team to win the World Series.