In the 2026 MLB season, the stretch run for postseason berths centers on division leads and the competitive wild-card races across both leagues, where recent form, pitching depth, and bullpen reliability heavily influence implied probabilities. Teams with favorable remaining schedules and healthy rotations hold advantages, while injuries to key starters or closers can quickly shift momentum. Trade-deadline acquisitions continue to pay dividends for contenders building depth, and head-to-head matchups in the final two months often decide tiebreakers. Historical patterns show that clubs maintaining strong home records and avoiding extended losing streaks tend to secure spots, though late surges from underdogs remain possible given the parity in the current standings.