His parents are Angel Alejandro Jerez Matos, and Dulce María Bueno Núñez. He is the 3rd. son of the Jerez Bueno Family, which includes: Miguel Angel, Alexandra, and Dulce.
He studied High School at Instituto Evangélico in his native Santiago, then participated in the AFS Exchange Student Program.
He became a bachelor of arts in business at the Pontificia Universidad Católica Madre y Maestra in Santiago, Dominican Republic, in 1991. He also graduated in broadcast journalism at the Northeast Broadcast School in Boston in 1995.
Jerez became famous by narrating ESPN Latin America's retransmissions of ESPN USA's ESPN Wednesday Night Baseball and Sunday Night Baseball with the home run catchphrase "Sólido, conectando. A lo profundo... y ¡no... nono, nono, no...! ¡Dígale que no a esa pelota!" This phrase is also played on highlight reels of the U.S. version of SportsCenter, e.g. the highlights of the Home Run Derby with Sammy Sosa.