After the boycott of 1904 , the World Series was played every year until 1994 despite World War I , the global influenza pandemic of 1918 – 1919 , the Great Depression of the 1930s , America 's involvement in World War II , and even an earthquake in the host cities of the 1989 World Series . A breakdown in collective bargaining led to a strike in August 1994 and the eventual cancellation of the rest of the season , including the playoffs
earthquake
1989 Loma Prieta earthquake
World Series