Antonio Alfonseca was born in the Dominican Republic. He has a decade of experience playing Major League Baseball. During his career, Coach Alfonseca pitched for the Florida Marlins (1997–2001, 2005), the Chicago Cubs (2002–2003), the Atlanta Braves (2004), the Texas Rangers (2006), and the Philadelphia Phillies (2007). Coach Alfonseca currently leads the pitcher training and development program FMU.