Baseball is a thoughtful sport marked by a storied history, long seasons, plenty of statistics, and a roster of teams that has grown steadily over time. That has caused some major changes in how the Major League Baseball postseason is structured. For this list of most successful MLB postseason teams, we’ve accounted for the team’s full record, including both regular and postseason games. For some teams, that includes the relatively new division series. For others, it includes only the league championship series and the World Series.
The league’s divisions, teams, and postseason format aren’t the only changes in baseball when these great teams played. The oldest team on the list dates to 1969, the year when both the pitcher’s mound and strike zone shrank to cut down on the dominance of major league pitching. That was also the first year of postseason divisional play. In other seasons, the instant replay was introduced and the number of teams jumped to the current 30.
To calculate the most dominant team, teams that won at least seven games in the postseason (every MLB season after 1968 qualifies) are ranked according to their postseason winning percentage, with ties broken by the team with the most wins during the regular season.
Read on for the 10 most dominant MLB teams in postseason history.
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