Yamamoto Gives You Six Innings. The Question Is What Comes Next.

One number cuts through all the October optimism in Los Angeles: 13.23. That is the ERA one Dodgers reliever has posted over his last five appearances, against a season baseline that sat comfortably around 3.1. That is not a slump. That is a arm that has come apart at the seams at the worst possible moment, and it sits inside a bullpen that has already lost Brusdar Graterol, Will Klein, Ben Casparius, Jake Cousins, and Eric Lauer—all on the 60-day IL—with Blake Treinen still working his way back on the 15-day. When I wrote three weeks ago about the bullpen being broken before the stars returned, this is what broken looks like in the box score.

The surface story heading into the NLDS is easy and it is true: Yoshinobu Yamamoto is one of the best pitchers in baseball right now. His 2.42 ERA and 0.86 WHIP across 197 innings this season are not the product of a soft schedule or a favorable park—they are the work of a pitcher who has been dominant in a way that earns the All-Star selection he received. Tyler Glasnow at 7-2 with a 3.60 ERA gives the Dodgers a genuine one-two at the top. The rotation, on paper, is a legitimate postseason weapon.

But postseason games do not end at the sixth inning, and that is precisely where the Dodgers' structural problem lives. Yamamoto's workload—30 starts, 197 innings—means Dave Roberts will manage him carefully in a short series. Every inning Yamamoto does not pitch is an inning that has to come from somewhere else, and that somewhere else is a bullpen with a six-man crater where its depth used to be. The relievers currently logging meaningful innings—Alex Vesia, Edgardo Henriquez, Jack Dreyer—are not household names for a reason. Tanner Scott leads the closer depth chart, with Edwin Díaz barely registering behind him. That is a thin margin for a team that expects to go deep in October.

Roki Sasaki adds a separate layer of uncertainty. His season ERA of 4.99 is not the number of a reliable postseason starter, and more concerning is what has happened to his workload recently—his innings per start have collapsed to roughly a third of where they were earlier in the year. Whether that reflects injury management or a deliberate plan to preserve him for October, the effect is the same: the Dodgers cannot count on him to eat innings when the bullpen needs rest. Emmet Sheehan's 4.71 ERA rounds out a back half of the rotation that is functional in the regular season and genuinely risky in a five-game series.

The defensive tightening of the last ten games—allowing 2.6 runs per game compared to 4.0 over the prior stretch—has been real and it has been the engine of this winning run. But that improvement does not happen in isolation from the pitching. When the starters are dealing, the bullpen's fragility stays hidden. In a playoff series, against a lineup with patience and power, starters get shorter. Leads get handed over earlier. And the hidden becomes visible very fast. The Dodgers are built to win the first five innings of every NLDS game. My read is that they are not yet built to win the last four.