These 5 MLB teams missed the playoffs. Why they could break through in 2027

The analysis highlights five MLB teams that missed the 2026 postseason but possess the foundational rosters to contend in 2027. The featured clubs are the Seattle Mariners, Arizona Diamondbacks, Pittsburgh Pirates, Miami Marlins, and Washington Nationals. The writer argues that targeted offseason adjustments to rosters and coaching staffs could quickly transform these non-playoff franchises into legitimate contenders next season.

Key factors identified include Seattle rebuilding its coaching staff after dismissing manager Dan Wilson, Arizona leveraging financial flexibility alongside returning stars, and Pittsburgh leaning on elite young starting pitching led by Paul Skenes. Miami and Washington are projected to capitalize on developing offensive cores, provided Washington successfully addresses a bullpen that surrendered 42 blown saves in 2026.