MLB Playoff Format: How the 12-Team Postseason Works

How the Current MLB Playoff Format Works

Since the 2022 season, the MLB playoff format has included 12 teams, with six coming from the American League and six from the National League. Each league places its three division winners and three wild card teams into a bracket of a best-of-three Wild Card Series, a best-of-five Division Series, a best-of-seven League Championship Series, and a best-of-seven World Series. The tournament runs after the regular season wraps up and takes about one month to finish.

Owners and players settled on the 12-team field during the 2022 collective bargaining negotiations. The setup replaced the 10-team postseason used from 2012 through 2021, which matched two wild card teams in each league in a single one-game playoff.

Which Teams Qualify and How Seeding Works

Six teams qualify per league: the three division winners and three wild card teams. Division winners hold seeds 1, 2, and 3, while the wild card teams fill seeds 4, 5, and 6 in order of regular season record.

Each league's two best division winners earn byes straight into the Division Series. The remaining division winner takes the third seed and opens in the Wild Card Round against the sixth-seeded wild card team.

Ties no longer produce a tie-breaker game, known as Game 163, which was eliminated with the 2022 change. Spots and seedings now come from a formula applied the same way for both: head-to-head record, then intra-division record, then inter-division record, then record over the last half of intra-league games, with that final step reaching back game by game as needed. A coin flip settles a two-team tie that survives every measure, and a draw of lots handles three or more teams.

The Wild Card Series

The Wild Card Round is a pair of best-of-three series involving the lowest-seeded division winner and the three wild card teams. The third-seeded division winner hosts the sixth seed, and the fourth-seeded wild card team hosts the fifth seed.

Every game takes place at the higher seed's ballpark. MLB first tried that arrangement in 2020 to limit travel and reward stronger regular season play, then made it part of the expanded format beginning in 2022.

The Division Series

The Division Series is best-of-five and features the two wild card winners plus the two highest-seeded division winners. The 1 seed draws the winner of the 4/5 series, and the 2 seed draws the winner of the 3/6 series. Nothing gets re-seeded, so the bracket stays fixed from the start.

Home field belongs to the two division winners with the best records in each league, who face the Wild Card Series winners. Games run in a 2-2-1 order, a layout adopted for the Division Series in 1998 after years of the 2-3 setup, under which the club hosting the first two games had no way to clinch on its own field.

The 2012 Division Series temporarily opened with two home games for the lower seeds because the regular season schedule had been set before the postseason expansion was agreed to. Normal 2-2-1 order returned in 2013.

The League Championship Series

The two Division Series winners in each league advance to the best-of-seven League Championship Series. The ALCS and NLCS winners then meet in the World Series.

Since 1998, the club with the better record has held home field in the LCS, which uses a 2-3-2 layout. A wild card team never picks up the extra home game regardless of record unless both LCS clubs are wild cards, a possibility that opened with the 2022 format.

The World Series

The American League and National League champions close the postseason in the best-of-seven World Series. A 2-3-2 schedule has been in place since 1924, aside from 1943 and 1945, when wartime travel restrictions required a 3-4 arrangement.

Home field goes to the pennant winner with the higher seed in its own league, putting that club at home for games 1, 2, 6, and 7. Matching seeds send the decision to regular season records. The 2020 World Series stands apart, with every game played at a neutral site because of the COVID-19 pandemic.

From 2003 through 2016, the All-Star Game decided World Series home field, a change made after the 2002 All-Star Game ended in a tie. A collective bargaining agreement accepted after the 2016 season took effect in 2017 and ended that link.

Home-Field Advantage Round by Round

Each round treats home field a bit differently. The Wild Card Series gives the higher seed all three games, and the Division Series hands the edge to the top two division winners over the wild card survivors in a 2-2-1 structure.

The LCS follows a 2-3-2 pattern with the better record in charge, subject to the wild card rule. In the World Series, the higher league seed hosts games 1, 2, 6, and 7, and identical seeds bring regular season records into play.