The 2005 Major League Baseball season was notable for the league's new steroid policy in the wake of the BALCO scandal, which enforced harsher penalties than ever before for steroid use in Major League Baseball. Several players, including veteran Rafael Palmeiro, were suspended under the new policy. Besides steroids it was also notable that every team in the NL East finished the season with at least 81 wins. Additionally it was the first season featuring a baseball team in Washington, D.C. since the second iteration of the Washington Senators last played there in 1971; the Washington Nationals had moved from Montreal, the first relocation of a team in 33 years and currently the most recent time this has occurred in the majors.
The 2003 Major League Baseball season ended when the Florida Marlins defeated the New York Yankees in a six-game World Series. The Detroit Tigers set the American League record for losses in a season, with 119, and the Marlins became the first team to win the championship twice as a wild card.
The 2006 Major League Baseball season ended with the National League's St. Louis Cardinals winning the World Series with the lowest regular-season victory total (83) in a fully-played season in major league history. The Atlanta Braves failed to qualify for the postseason for the first time since 1990. Individual achievements included Barry Bonds who, despite questions surrounding his alleged steroid use and involvement in the BALCO scandal, surpassed Babe Ruth for second place on the career home runs list. The American League continued its domination at the All-Star Game by winning its fourth straight game, and ninth of the prior 10 contests.
The 2007 Major League Baseball season began on April 1 with a rematch of the 2006 National League Championship Series; the St. Louis Cardinals and New York Mets played the first game of the season at Busch Stadium in St. Louis, Missouri, which was won by the Mets, 6–1. The regular season concluded with seven teams entering the postseason who had failed to reach the 2006 playoffs including all National League teams, with only the New York Yankees returning; a dramatic one-game playoff between the Colorado Rockies and San Diego Padres; and the largest September collapse for a leading team in baseball history, with the Mets squandering a 7-game lead with 17 to play, losing on the final day of the regular season, and the Philadelphia Phillies capturing the National League East for the first time since 1993. The season ended on October 28, with the Boston Red Sox sweeping the World Series over the Rockies, four games to zero.
The 2001 Major League Baseball season finished with the Arizona Diamondbacks defeating the New York Yankees in seven games for the World Series championship. The September 11 terrorist attacks on New York and Washington, D.C. pushed the end of the regular season from September 30 to October 7. Because of the attacks, the World Series was not completed until November 4. The 2001 World Series was the first World Series to end in November.
The 2002 Major League Baseball season finished with two wild-card teams contesting the World Series; the Anaheim Angels defeated the San Francisco Giants in seven games for the World Series championship. It was the first title in Angels team history. This was the first season for MLB.tv.
The 1998 Major League Baseball season ended with the New York Yankees sweeping the San Diego Padres in the World Series, after they had won a then AL record 114 regular season games. The Yankees finished with 125 wins for the season, which remains the MLB record.
The 2008 Major League Baseball season began on March 25, 2008, in Tokyo, Japan with the 2007 World Series champion Boston Red Sox defeating the Oakland Athletics at the Tokyo Dome 6–5 in the first game of a two-game series, and ended on September 30 with the host Chicago White Sox defeating the Minnesota Twins in a one-game playoff to win the AL Central. The Civil Rights Game, an exhibition, in Memphis, Tennessee, took place March 29 when the New York Mets beat the Chicago White Sox, 3–2.
The 1993 Major League Baseball season was the final season of two-division play in each league, before the Central Division was added the following season, giving both the NL and AL three divisions each.
The 1986 Major League Baseball season saw the New York Mets win their second World Series title, their first since 1969.
The 1959 Major League Baseball season was played from April 9 to October 9, 1959. It saw the Los Angeles Dodgers, free of the strife produced by their move from Brooklyn the previous season, rebound to win the National League pennant after a two-game playoff against the Milwaukee Braves, who themselves had moved from Boston in 1953. The Dodgers won the World Series against a Chicago White Sox team that had not played in the "Fall Classic" since 1919 and was interrupting a Yankees' dynasty that dominated the American League between 1949 and 1964.
The 1967 Major League Baseball season was contested from April 10 to October 12, 1967. The St. Louis Cardinals defeated the Boston Red Sox four games to three in the World Series, which was the first World Series appearance for the Red Sox in 21 years. Following the season, the Kansas City Athletics relocated to Oakland.
The 1951 Major League Baseball season opened on April 16 and finished on October 12, 1951. Teams from both leagues played a 154-game regular season schedule. At the end of the regular season, the National League pennant was still undecided, resulting in a best-of-three tiebreaker between the New York Giants and the Brooklyn Dodgers. After splitting the first two games, the stage was set for a decisive third game, won in dramatic fashion on a walk-off home run from the bat of Giant Bobby Thomson, one of the most famous moments in the history of baseball, commemorated as the "Shot Heard 'Round the World" and "The Miracle at Coogan's Bluff". The Giants lost the World Series to defending champion New York Yankees, who were in the midst of a 5-year World Series winning streak.
The 1954 Major League Baseball season was contested from April 13 to October 2, 1954. For the second consecutive season, an MLB franchise relocated, as the St. Louis Browns moved to Baltimore and became the Baltimore Orioles, who played their home games at Memorial Stadium.
The 1953 Major League Baseball season was contested from April 13 to October 12, 1953. It marked the first relocation of an MLB franchise in fifty years, as the Boston Braves moved their NL franchise to Milwaukee, where they would play their home games at the new County Stadium. This was also the first regular season of the televised Major League Baseball Game of the Week, originally broadcast on ABC.
The 1973 Major League Baseball season was the first season of the designated hitter rule in the American League.
The 1932 major league baseball season began on April 11, 1932. The regular season ended on September 25, with the Chicago Cubs 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 29th World Series on September 28 and ended with Game 4 on October 2. The Yankees swept the Cubs in four games.
The 1941 major league baseball season began on April 14, 1941. The regular season ended on September 28, with the Brooklyn Dodgers 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 38th World Series on October 1 and ended with Game 5 on October 6. The Yankees defeated the Dodgers, four games to one.
The 1942 major league baseball season began on April 14, 1942. The regular season ended on September 27, with the St. Louis Cardinals 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 39th World Series on September 30 and ended with Game 5 on October 5. The Cardinals defeated the Yankees, four games to one.
The 2017 Major League Baseball season began on April 2 with three games, including the 2016 World Series champions Chicago Cubs facing off against the St. Louis Cardinals, the regular season ended in late September. The postseason began on October 3. The World Series began October 24 and Game 7 was played on November 1, in which the Houston Astros defeated the Los Angeles Dodgers in seven games, to capture their first World Series championship in franchise history.
