The 1972 Major League Baseball strike was the first players' strike in Major League Baseball history. The strike occurred from April 1, 1972, to April 13, 1972.
Baseball resumed when the owners and players agreed on a $500,000 increase in pension fund payments. Owners agreed to add salary arbitration to the Collective Bargaining Agreement. The 86 games that were missed over the 13-day period were never played because the league refused to pay the players for the time they were on strike. As a result, the Houston Astros and San Diego Padres each played only 153 games, nine fewer than normal. Most other teams lost anywhere from six to eight games. They also lost $5,000,000.
One major effect of the uneven schedule was that the Detroit Tigers played one more game than the Boston Red Sox, which enabled Detroit (with a record of 86–70) to win the American League East by ½ game over Boston (with a record of 85–70). Detroit won the division on the next-to-last day of the season when they beat Boston, 3–1, at Tiger Stadium.