Major League Baseball is set to crown a World Series champion in October, according to the post-season schedule released by the commissioner's office on Thursday. The best-of-seven championship series between the National and American League winners will start on October 23 in the home ballpark of the contender with the superior regular-season record. The World Series has ended in November in each of the past three years, concluding on November 1 last year when the Houston Astros defeated the Los Angeles Dodgers in game seven.