Davey Lopes made his first appearance in the Majors with the Los Angeles Dodgers in 1972, where the Second Baseman would quietly showcase himself as one of the better infielders of the decade.
Javier Vasquez could be considered to have been a journeyman, as he played for six different teams (and one team twice), but the Puerto Rican hurler was a lot better than he got credit for.
From the Dominican Republic, Pedro Guerrero brought his bat to the National League, playing mostly with the Los Angeles Dodgers.
Baseball fans know what Harvey Haddix is mostly known for.