New York Yankees.
In addition to the most wins, 560, Oklahoma also has the best winning percentage, at .74835.
The University of Notre Dame has the highest winning percentage during that time. They have had 875 wins, 305 losses and 42 ties.
To me Penn State.
According to today's Baltimore Sun, "The Steelers have the best home winning percentage (.722) in the NFL since 1970." http://www.baltimoresun.com/sports/football/bal-ravensscout0928,0,734965.htmlstory Must be a steelers fan since he doesn't include the year 66,67,68,69 in which the Steelers were terrible. Include those numbers and the steelers do not have the best home winning percentage. Since 1966 the Kansas City Chiefs have the best winning percentage followed by the Packers.
Bob Stoops of OU football team
jacksonville jaguars are .700
To the best of my knowledge, Boise State.