- Bats Right, Throws Right
- Height 5' 10", Weight 190 lb.
- High School Liceo Elias Rodriguez Escuela
- Debut July 9, 2016
Rosario signed with the Los Angeles Angels of Anaheim in January 2005. He hit .227/.276/.252 for the 2005 DSL Angels, .275/.351/.348 in 2006 and .301/.350/.397 in 2007. He came stateside in 2008, shuttling between four different Angels affiliates and hitting a composite .228/.261/.289 in 73 games as a backup catcher. He spent all of 2009 with the Rancho Cucamonga Quakes, batting .232/.279/.306. His 103 assists led California League backstops. In 2010, Rosario played for the Quakes (.304/.355/.431 in 48 G) and the Arkansas Travelers (.193/.224/.211 in 51 G). He then joined the Dominican national team for the 2010 Pan American Games Qualification Tournament as the alternate to Alberto Castillo.