The 2018 MLS Cup Playoffs (branded as the 2018 Audi MLS Cup Playoffs for sponsorship reasons) began on October 31 and ended on December 8 with MLS Cup 2018, the 23rd league championship match for MLS. This was the 23rd version of the MLS Cup Playoffs, the tournament culminating the Major League Soccer regular season. Twelve teams, the top six of each conference, competed in the MLS Cup Playoffs. Toronto FC were the defending MLS Cup champions, but failed to qualify for the playoffs. Atlanta United FC won their first MLS Cup title.