No, Major League Baseball (MLB) did not always have playoffs in the format we recognize today. Initially, teams competed in a single league, and the team with the best record at the end of the season was declared the champion. The postseason as we know it began in 1903 with the first World Series, which was established to determine the champion between the National League and the newly formed American League. Over the years, the playoff structure has evolved, adding more teams and rounds to the postseason format.
Every year, 8 teams qualify for the MLB playoffs. If you win your division, you make the playoffs.
162 and then playoffs
1994
They start October 4th this year.
The MLB team that has gone undefeated in the playoffs were the 1976 Cincinatti Reds swept the Phillies 3-0 in the NLCS and then swept the Yankees 4-0.
Billy Martin
Florida Marlins
Mlb.tv
1981 dodgers
Rays
The Washington Nationals / Montreal Expos franchise has the longest current streak of seasons not making the playoffs. They have not made the playoffs since 1981.
The two leagues in MLB went from two divisions to three divisions in 1994. That would have been the first year of the wildcard but that was the year the players went on strike and the playoffs and World Series were cancelled. The first year the wildcard was part of MLB's playoffs was 1995.