<P> Listed below are the Major League Baseball teams with the best season win - loss records in history, as determined by winning percentage (. 700 or better), minimum 120 games played . </P> <P> The following teams finished the season with a . 700 winning percentage or higher . </P> <P> Since the season was expanded to 162 games in 1961, only two teams have managed a winning percentage greater than . 700 (which requires 114 wins). These two are the 1998 New York Yankees and the 2001 Seattle Mariners . </P> <Dl> <Dt> Legend </Dt> </Dl>

What was the best mlb team record ever