The favorite of many sabremetricians, Bobby Grich, is known more for his latter stay with the California Angels, but he cut his teeth initially with the Baltimore Orioles.

Vern Stephens’ MLB career began with the St. Louis Browns when he debuted for the team in 1941.  As many baseball players made their way to serve the military during World War II, Stephens was one of the players who were still in the Majors.  His first full season was 1942, where he finished fourth in MVP voting, and he went to his first All-Star Game in 1943, which was his first of three as a Brown.  Stephens showed good power numbers with three consecutive 20 Home Run seasons (1943-45), with a league-leading 24 in 1945, and he was also first in 1944 in RBIs with 109 in 1944.  That season, he helped the Browns reach the World Series, albeit in a losing effort.

The Montreal Expos were the second team that Ken Singleton played for, which was where he established himself as a bona fide everyday baseball player.  The Expos traded him (which they would regret) to Baltimore, and he would do even better playing in the state of Maryland.

Dave McNally debuted at 19 for Baltimore in 1962, and he would spend the next few years as a mid-level starter and helped Baltimore win the 1966 World Series.  From 1968 to 1971, McNally was a three-time All-Star, and he would never have less than 20 Wins, and he led the American League in that stat with 24.  That year, he again won a World Series Ring as the Orioles won it all.  In 1970 he finished second in Cy Young voting, and he was fourth the year before and after.  McNally had two more 16 Win Seasons for Baltimore.