The 1957 major league baseball season began on April 15, 1957. The regular season ended on September 29, with the Milwaukee Braves and New York Yankees as the regular season champions of the National League and American League, respectively. The postseason began with Game 1 of the 54th World Series on October 2 and ended with Game 7 on October 10. The Braves defeated the Yankees, four games to three, capturing their second championship in franchise history, their first since , and first in Milwaukee. Going into the season, the defending World Series champions were the New York Yankees from the season.
The 24th Major League Baseball All-Star Game was held on July 9 at Busch Stadium in St. Louis, Missouri, home of the St. Louis Cardinals. The American League won, 6âÂÂ5.
The National League's Brooklyn Dodgers and New York Giants played their final seasons as New York City-based franchises before their moves to California for the season, leaving New York City without a National League team until the founding of the expansion New York Mets in .
On April 22, the Philadelphia Phillies became the 14th team in professional baseball to break the color line when they fielded John Kennedy.
The 1957 schedule consisted of 154 games for all teams in the American League and National League, each of which had eight teams. Each team was scheduled to play 22 games against the other seven teams of their respective league. This continued the format put in place since the season (except for ) and would be used until in the American League and in the National League.
American League Opening Day took place on April 15, featuring the Baltimore Orioles and Washington Senators, while National League Opening Day took place the following day, featuring all eight NL teams. This was the first season since that both leagues opened on different days. The final day of the regular season was on September 29, which saw all sixteen teams play, continuing the trend from . The World Series took place between October 2 and October 10.
The 1957 season saw the following rule changes:
An asterisk (*) denotes the ballpark a team played the minority of their home games at
5 tie games (2 in AL, 3 in NL), which are not factored into winning percentage or games behind (and were often replayed again) occurred throughout the season.
The Baltimore Orioles had two tie games. The Chicago White Sox and Kansas City Athletics had one each.
The Chicago Cubs and Philadelphia Phillies had two tie games each. The Milwaukee Braves and Pittsburgh Pirates had one each.
The postseason began on October 2 and ended on October 10 with the Milwaukee Braves defeating the New York Yankees in the 1957 World Series in seven games.
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Any team shown in indicates a previous team a player was on during the season.
The Brooklyn Dodgers would continue to play several home games in Jersey City, New Jersey as they started doing so the previous year, playing eight games, on April 22, May 3, June 5, 10, July 12, August 7, 16, and September 3.
The Brooklyn Dodgers would play their final game at Ebbets Field on September 24 against the Pittsburgh Pirates, relocating to Los Angeles, California at Los Angeles Memorial Coliseum as the Los Angeles Dodgers for the start of the season.
The New York Giants would play their final game at the Polo Grounds on September 29 against the Pittsburgh Pirates, relocating to San Francisco, California at Seals Stadium as the San Francisco Giants for the start of the season.
CBS aired the Game of the Week for the third consecutive year, and began to air games on Sunday as well as Saturday.
NBC also started to air weekend games, purchasing the rights to broadcast 11 Milwaukee Braves games, 11 Pittsburgh Pirates games, two Washington Senators games, and two Chicago Cubs games. The All-Star Game and World Series also aired on NBC.