In Milwaukee , the team never had a losing season .
The team was very dominant in the late nineteenth century , when it was known as the Boston Beaneaters , winning four of the five National Association of Professional Base Ball Players championships and eight National League pennants .
In Boston Beaneaters , the team never had a losing season .
The team was very dominant in the late nineteenth century , when it was known as the Boston Beaneaters , winning four of the five National Association of Professional Base Ball Players championships and eight National League pennants .