What team has won the fourth most World Series?
As of the 2008 season:
1) New York Yankees - 26 World Series won
2) St. Louis Cardinals - 10 World Series won
3) Oakland Athletics - 9 World Series won (5 of those were in Philadelphia)
4) Boston Red Sox - 7 World Series won
Between 4 and 7. The two teams in the World Series play each other a maximum of 7 games with the team that wins 4 of those games declared the winner. If one team wins the first 4 games, the Series is over. Like in 2010, if one team wins their fourth game in the fifth game of the Series, the Series is over.