The 2011 Dodgers
the houston astros
A man by the name of Brian Matusz held the worst qualifying ERA in a season. It was 10.69. I am still looking for the worst qualifying career ERA.
There is no worst baseball team in MLB.
the worst team is the Astros they are falling apart
the Houston Astros
It isn't measurable.
They are the worst team in the mlb
The 1988 Baltimore Orioles lost their first 21 games of the season.
The Washington Nationals