The Pittsburgh Pirates (1993-2010) hold the current record for professional sports-18 straight losing seasons.
That is a very difficult question to answer because one would have to compare all of the win percentages of every single team on every single solitary sports league and spend most of your day researching this. To answer your question the Chicago Bears are the worst sports team in the world because their name is entirely unoriginal and pretty much worship George Halas. I mean who wears their coach from 50 years ago's initials on their uniforms? And Vince Lombardi was 10x better than George Halas anyway. They rank up there with the Dallas Cowboys and the New York Yankees. GO PACK GO!!
The New Zealand rugby team, the All Blacks, have an all-time 74.49% winning percentage.
North Carolina Tarheels when you filter in all NCAA sports
I think none.
Rugby - they're a team composed of all the best players in the world at that time
Team, dedication, perserverence, time, family.
Miami dolphins have the all time pro highest winning %
The sports, specifically the team sports are very rhythmic as all the team members have to work in a rhythm with each other to achieve a common goal.
It all depends on what sport you are talking about and in which way they are the greatest. This also means you must get very specific. For instance, the most dominant basketball team of all time was the UCLA Basketball team of 1970-1971.
Munster rugby who won 2 Heineken cups beating off Toulouse and Biarritz .
well all sports can be played on a team amaturally but not 100% can be professionally like tennis can be singles or doubles
Thoroughbreds for baseball, Racers for all other sports.