**Strong starting pitching and low-scoring Division Series contests are shaping expectations for the longest 2026 MLB postseason game.** Early playoff results, including 1-0 and 3-0 ALDS openers plus narrow 3-2 and 4-3 NLDS decisions, highlight dominant starters and bullpen usage that extend contests. Playoff rules omit the automatic runner in extra innings, raising the chance of marathons beyond the 15-18 inning historical marks seen in prior postseasons. Traders are watching remaining ALDS and NLDS matchups, potential LCS and World Series pitching duels, and series that reach Game 5, where fatigue and deeper bullpens increase the likelihood of prolonged extra-inning affairs.