Tampa bay rays
I am adding to the answer because the information supplied by the responder has some noteworthy information on the NY Yankees. That answer can be seen in the last two paragraphs. The best New York Yankee lifetime winning percentage by a starting picther is held by Lefty Gomez. He pitched in the 1930's and had a winning percentage of .839. Whitey Ford had a career .690 win percentage for a career, one of the best for any team. Ron Guidry's .893 win percentage in 1978 is also one of the best for any starting pitcher on any team.
it had to be yao ming,lebron james, iverson
Detroit Lions last winning season was in 2000, where they went 9-7.
The once proud Pirates franchise has won the World Series 5 times, the last time in 1979. The last time the Pirates were in the postseason was a 3 year stretch from 1990-1992 where they lost the NLCS in all three years. They have not had a winning season for 17 years.
San antonio spurs
Steelers
San Antonio spurs
Manchester United
Packers
Nebraska .78969
Tampa bay rays
San Antonio Spurs have the best winning percentage over the last 13 years out of the four major sports in the US.
New England Patriots
To the best of my knowledge, Boise State.
North Dakota State University Bison
AU