Through Super Bowl XLII, that would be the Carolina Panthers at 6-3 for a winning percentage of .667 and the Baltimore Ravens at 5-3 for a winning percentage of .625. For teams that have been around a little longer than the Panthers and Ravens, it would be the New England Patriots at 21-13 for a winning percentage of .618 and the Green Bay Packers at 24-15 for a winning percentage of .615.
New york yankees
As of the start of the 2010 season, the Cowboys have leapfrogged the Miami Dolphins. The Dolphins have a win percentage of .579 and the Cowboys have a .580 percentage.
That would depend on what team has the best winning percentage in the league. Generally, the wild card team plays the division winner with the best winning percentage. However, if the division winner with the best winning percentage is in the same division as the wild card team, then the wild card team will play the division winner with the second best winning percentage and the division winner with the best winning percentage will play the other division winner. MLB is the only major sport that sets up their playoff system this way. This would keep the Yankees and Red Sox from playing in the first round of the playoffs.
The New England Patriots have the best win percent since 2011, with a 3 season average winning percentage of .771.
The St. Louis Cardinals.
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
As of 2013, the baseball team with the worst winning percentage since 2000 is the Baltimore Orioles, with a 0.431 winning percentage.
The 1906 Chicago Cubs have the best winning percentage for a season with .763. The Cubs 1906 record was 116-36.
jacksonville jaguars are .700
New York Giants!!!
Teams with at least 4 World Series appearances, the Pittsburgh Pirates have the best winning percentage. 5 World Series titles in 7 Appearances, 5 -2 for a .714 winning percentage. Teams with at least 10 World Series appearances, the New York Yankees have the best winning percentage. 27 World Series titles in 40 Appearances, 27 -13 for a .675 winning percentage.
1982-83 Philadelphia 76ers have the best winning percentage in NBA Playoffs history at .923 (12-1).
Through the 2007 season, the American League team with the most wins in a regular season was the 2001 Seattle Mariners with 116. The American League team with the best winning percentage in a regular season is the 1954 Cleveland Indians who went 111-43 for a winning percentage of .721. Seattle's record in 2001 was 116-46 for a winning percentage of .716.
According to the Pro Football Hall of Fame, as of the start of the 2007 season the team with the best all time regular season winning percentage was the Miami Dolphins whose all time regular season record was 368-252-4 for a winning percentage of .593. Second was the Chicago Bears with an all time regular season record of 670-482-42 for a winning percentage of .579.
Tampa bay rays
The SAN ANTONIO SPURS definitely the best team with 4 championships to back them up and the best players in general who work as a team
Through the 2010 season, it's the Chicago Bears. They have a record of 704-512-42 for a winning percentage of .579.
Witchita state shockers