What is the worst team in Pittsburgh Pirates history? Well, there is a few ways one could go about trying to figure this out.
You could go by winning percentage, since that more accurately represents how a team performed relative to the number of games they played. You could go by pure losses, but that could omit some deserving teams from consideration.
You could use subjective metrics, like which teams were comprised of players you personally deem without value. I guess you could even see which teams won the fewest games, but that might also be the team that lost the most (spoiler alert, it is).