During the pandemic of 1918, the World Series was held after a regular season abbreviated not because of influenza, but because of the Great War in Europe. Though ill-advised from a medical perspective, the Red Sox and Cubs were given dispensation until Sept. 15 to play the World Series, whereupon the war department’s “work or fight” order would be enforced, requiring the ballplayers to do one or the other in service to the nation. The Red Sox defeated the Cubs four games to two, bolstered by the pitching performance of a young lefthander named Babe Ruth.
Article source: https://www.nytimes.com/2020/05/01/well/mind/baseball-coronavirus-masks-quarantine-war-influenza.html