On October 17 , just minutes before the scheduled start of Game 3 , a magnitude 6.9 earthquake struck the Bay Area causing significant damage to both Oakland and San Francisco . Candlestick Park in San Francisco suffered damage to its upper deck as pieces of concrete fell from the baffle at the top of the stadium and the power was knocked out . The game was postponed out of concerns for the safety of everyone in the ballpark as well as the loss of power , with Vincent later saying that he did not know when play would resume . The series resumed on October 27 and finished the next day
magnitude 6.9 earthquake
1989 Loma Prieta earthquake
1989 World Series