The phrase "worst team" means a group of people who are not very good at what they do and are considered to be the least skilled or successful compared to other teams.
Sentences with «worst team»
That made them the second worst team in the league for spread bettors. (sportsinsights.com)
First half was poor, largely because of bad team selection. (justarsenal.com)
They just don't come to play against bad teams. (sbnation.com)