i would like to give cleveland an honorable ,er, dishonerable mention.
since the superbowl era, they have not won a championship.
NFL - Browns 0 Super Bowl appearances. there is only 1 other non-recent expansion team to not have a suber bowl appearance. The Ravens then won 2 Super Bowls after leaving Cleveland.
MLB - Indians haven't won the World Series since 1948
NBA - Cavaliers have 0 Championships. Lebron won 2 after he left Cleveland
NHL - Barons played 2 seasons before merging with the North Stars. Finally won a Stanley Cup when the Stars moved to Dallas. This is the last team to cease operations in the 4 major american sports leagues.