 Prior to the advent of the wild card playoff system in 1994, all five pennant playoffs in the National League had involved the Brooklyn/Los Angeles Dodgers (who won the coin toss for home field advantage all five times, yet lost every year except 1959), and both American League playoffs had involved the Boston Red Sox (who hosted both and lost both).The 2018 season was the first to see two one-game playoffs, both for division titles (the NL Central and NL West) - the first time divisional one-game playoffs were needed at all since the MLB postseason expanded to ten teams.Both were in the National League and meant that the Game 163 winners won the division and advanced to the LDS, while the losers met each other in the Wild Card Game.