The New Zealand Rugby team, the All Blacks, have an all-time 74.49% winning percentage.
Miami dolphins have the all time pro highest winning %
Dallas Cowboys. 20 consecutive winning seasons.
The San Antonio Spurs have the best winning percentage over the past 13 years out of the four major sports in the US.
Yes
George Stienbrenner of the Yankees
San Antonio spurs
MLB Baseball.....I'm pretty sure
tennis, soccer,. swimming, badmington, cricket, and more
Basketball
New England Patriots
cleveland indians
Yes