How do sports leagues determine playoff seeding?

Most sports leagues determine playoff seeding based on regular season performance. The most common method is win-loss record, where teams with better records earn higher seeds and the advantages that come with them, such as home-field advantage or easier first-round matchups. When teams have identical records, tiebreakers are used, which vary by league. Common tiebreakers include head-to-head record, division record, conference record, strength of schedule, or point differential. Some leagues also factor in division or conference titles, automatically awarding certain seeds to division winners regardless of overall record. The NFL, NBA, NHL, and MLB each have their own specific tiebreaker rules, but the core principle across all major leagues is that regular season success earns better playoff positioning.