Wild Card Series, a best of three games playoff between the lowest seeded division champion and three "wild-card teams", the higher seeds will host all three games American League Division Series and National League Division Series, each a best-of-five-games series. American League Championship Series and National League Championship Series, each a best-of-seven-games series played between the winning teams from the Division Series. The league champions are referred to as the pennant winners. World Series, a best-of-seven-games series played between the pennant winners of each league. thumb|left|The Commissioner's Trophy is awarded annually to the winning team of the World Series, the league's championship series that concludes the postseason. Within each league, the division winners are the 1, 2, and 3-seeds, based on win–loss records. The teams with the first, second, and third best records among non-division winners will be seeded 4, 5, and 6 respectively. Throughout the postseason, home-field advantage is awarded to the team with the higher win-loss record, with tiebreakers being applied if necessary. In the Wild Card Series, the 3-seed will host the 6-seed, and the 4-seed will host the 5-seed, with the winners advancing to the Division Series. Unlike the NFL, there is no reseeding between each series. In the Division Series, the 1-seed goes up against the 3/6-seed and the 2-seed goes up against the 4/5-seed. The winners of those matches will compete in their respective League Championship Series for their league pennant, and the pennant winners will advance to the World Series. Since 2017, home-field advantage in the World Series is determined by regular-season records of the two league champions, replacing a system used for the prior 14 seasons where the champion of the league that won the All-Star Game would receive home-field advantage.
Wild Card Series, a best of three games playoff between the lowest seeded division champion and three "wild-card teams", the higher seeds will host all three games American League Division Series and National League Division Series, each a best-of-five-games series. American League Championship Series and National League Championship Series, each a best-of-seven-games series played between the winning teams from the Division Series. The league champions are referred to as the pennant winners. World Series, a best-of-seven-games series played between the pennant winners of each league. thumb|left|The Commissioner's Trophy is awarded annually to the winning team of the World Series, the league's championship series that concludes the postseason. Within each league, the division winners are the 1, 2, and 3-seeds, based on win–loss, records. The teams with the first, second and third best records among non-division winners will be seeded 4, 5, and 6 respectively. Throughout the postseason, home-field advantage is awarded to the team with the higher win-loss record, with tiebreakers being applied if necessary. In the Wild Card Series, the 3-seed will host the 6-seed, and the 4-seed will host the 5-seed, with the winners advancing to the Division Series. Unlike the NFL, there is no reseeding between each series. In the Division Series, the 1-seed goes up against the 3/6-seed and the 2-seed goes up against the 4/5-seed. The winners of those matches will compete in their respective League Championship Series for their league pennant, and the pennant winners will advance to the World Series. Since 2017, home-field advantage in the World Series is determined by regular-season records of the two league champions, replacing a system used for the prior 14 seasons where the champion of the league that won the All-Star Game would receive home-field advantage.