Francisco Alberto Rosario Divison (born September 28, 1980), is a Dominican professional baseball right-handed relief pitcher who is currently a free agent.

[1] Rosario was originally signed as an undrafted amateur free agent by the Toronto Blue Jays, on January 11, 1999.

Rosario made his first, and only, big league start, August 5, 2006, going three innings for the Blue Jays against the Chicago White Sox.

Rosario was injured that June, then spent some time with the Minor League Baseball (MiLB) Clearwater Threshers, on a rehab assignment.

He subsequently signed with the Mexican League Guerreros de Oaxaca, for the 2010 season, pitching in seven games for them, that year.