1970 Pittsburgh Pirates season

The 1970 Pittsburgh Pirates season resulted in the team winning their first National League East title with a record of 89–73, five games ahead of the Chicago Cubs. However, they lost the NLCS to the National League West champion Cincinnati Reds, three games to none.

The Pirates were managed by Danny Murtaugh and played their home games at Forbes Field during the first part of the year, before moving into the brand new Three Rivers Stadium on July 16. Coinciding with their move, the Pirates became the first major league team to adopt pullover jerseys and sans-a-belt pants for their uniforms, a style copied by a majority of MLB for the next two decades and which the Pirates themselves would wear through the 1990 season.

Three Rivers Stadium
In 1958, the Pirates had sold Forbes Field to the University of Pittsburgh, who wanted the land for expanded graduate facilities. Pitt then leased Forbes back to the Pirates until a new multipurpose stadium could be built. The Steelers opted to play at Pitt Stadium in the meantime. In June 1970, the Pirates played their final game at Forbes Field. It was a doubleheader sweep of the Chicago Cubs and Bill Mazeroski got the final hit at Forbes Field.

A site on the North Side had been chosen earlier in the year, but it took until April 25, 1968, to finally break ground. Three Rivers Stadium opened on July 16, 1970, and became the home of the Pirates and the Pittsburgh Steelers.

Notable transactions

 * October 9, 1969: Danny Murtaugh named Manager of the Pirates.
 * October 21, 1969: Dave Giusti and Dave Ricketts were traded to the Pirates by the St. Louis Cardinals for Carl Taylor.
 * February 4, 1970: Bo Belinsky was traded by the Pirates to the Cincinnati Reds for Dennis Ribant.

Regular season

 * June 12, 1970: Dock Ellis threw a no-hitter against the San Diego Padres. Allegedly, Ellis pitched the no-hitter on acid. According to Ellis, in Donald Hall's book, In the Country of Baseball, the Pirates were starting a west-coast road trip. After the Pirates landed in San Diego, Ellis visited his hometown of Los Angeles for a party. Ellis had forgotten he was slated to pitch the next day, so he took some acid the night before the game. At around 10 a.m., after catching maybe an hour of sleep, he realized he was in the wrong place.

Game log
Bold = Pirates team member''
 * ''Legend:      = Win       = Loss
 * ''Legend:      = Win       = Loss

Notable transactions

 * April 24, 1970: Al McBean was signed by the Pirates.
 * May 18, 1970: Al McBean was released by the Pirates.
 * June 4, 1970: 1970 Major League Baseball draft
 * Dave Parker was drafted by the Pirates in the 14th round of the 1970 Major League Baseball draft.
 * Ed Ott was drafted by the Pirates in the 23rd round of the 1970 Major League Baseball draft.
 * June 9, 1970: Orlando Peña was signed by the Pirates.
 * June 22, 1970: Chuck Hartenstein was selected off waivers from the Pirates by the St. Louis Cardinals.
 * August 26, 1970: Orlando Pena was released by the Pirates.
 * August 31, 1970: George Brunet was traded to the Pirates by the Washington Senators for Denny Riddleberger.
 * September 14, 1970: Dave Ricketts was released by the Pirates.
 * September 14, 1970: Mudcat Grant was traded to the Pirates by the Oakland Athletics for Angel Mangual.

National League Championship Series
The Cincinnati Reds won the series, three games to none, over the Pirates.

Statistics
''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''
 * Batting

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts
 * Pitching

Awards and honors
1970 Major League Baseball All-Star Game
 * Danny Murtaugh, Associated Press NL Manager of the Year

Farm system
LEAGUE CHAMPIONS: Waterbury