Major League Baseball owners have approved changing the format of this year's American League and National League Division Series from a 2-2-1 format to a 2-3 format. The team with home-field advantage will host the final three games of the series. The change was made to accommodate baseball's new one-game, wild-card playoff round. The new round of playoffs was added after schedules were set with the regular season ending Oct. 3 and the World Series starting Oct. 24.