Rosado played the first nine of those eleven games in his debut during the 1977 season, batting .208 with five hits over 24 at-bats as a 21-year-old playing first base with a game at catcher.
He’d go on to spend the next two seasons in the Minors before making it back to the Big Leagues in 1980 in what turned out to be the last of his career, appearing in two games while going hitless over four at-bats.
I can’t find any record of any pro ball for him between 1981 and 1983 before he was back in the Minors in both 1984 and 1985 for Baltimore and Detroit averaging right around .300 combined, before retiring for good.