New York Yankee pitcher Whitey Ford was one of the best New York Yankee pitchers and one of MLB's all time greats. He won the Cy Young Award in 1961 and he had an amazing winning percentage of .690. Tops for a modern league pitcher.As an aside, Whitey was known for his night clubbing with Billy Martin and Mickey Mantle.
Ben Roethlisberger (Pittsburgh Steelers) has the best winning percentage by far.
Highest Winning Percentage, Regular Season Miami Dolphins .580 Highest Winning Percentage, Overall Dallas Cowboys .577
Awesome best stadium in the world. I'm really sad its closing. I can't wait to attend the new one though.
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.
Tom Brady and Ben Roethlisberger are the two quarterbacks that have the best winning percentage in their first 4 years in the NFL. Ben Roethlisberger has the fourth highest career winning percentage as a quarterback.
No, Ohio State's winning percentage is 71.6%. It is the fifth highest of All-time. The University of Michigan holds the highest winning percentage of 74%
Through the 2010 season, it's the Chicago Bears. They have a record of 704-512-42 for a winning percentage of .579.
As of the 2013 season, the college football team that has the best winning percentage in Division 1 is Old Dominion with a winning percentage of .767. Old Dominion has only played 60 games in Division 1 though. Notre Dame is 2nd with a percentage of .733 Michigan is 3rd with a percentage of .732