September MLB unfolds four weeks of playoff calculus. This fantasy-focused digest translates the schedule into concrete angles: which series tilt division races, who to stream or bench, and where tiebreakers could decide hosting. Mets, Phillies, Astros, and Yankees anchor the drama, with Cal Raleigh and Jacob deGrom among the standouts whose late-season performances could swing fantasy outcomes and LDS byes. Bullpen usage, park factors, and hot-streaks shape rosters as October nears.