The Washington Nationals franchise was once known by which name?

In which division do the San Diego Padres play? Which MLB team's mascot is Swinging Friar? Which MLB team's mascot is Lou Seal? The Cleveland Guardians franchise was once known by which name? The Milwaukee Brewers franchise was once known by which name? The Houston Astros franchise was once known by which name? The New York Yankees franchise was once known by which name? The Baltimore Orioles franchise was once known by which name?