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Rukkr Original MLB · CHC By The Analyst Sep 13, 2026

Cabrera's 6.12 ERA Was the Argument All Along

Edward Cabrera has started 19 games this season. He has a 6.12 ERA and a WHIP that sits nearly a run and a half per inning. The Cubs let that number accumulate across the better part of five months before finally moving him out of the rotation. Whatever the organizational framing around this decision, the math was never ambiguous — it just took a long time to become undeniable.

This is the part of the deadline strategy that doesn't get discussed enough. When the Cubs went out and acquired Kevin Gausman, Clay Holmes, Braxton Garrett, and Ryan Zeferjahn in August, the implicit promise was that the rotation's existing problems would be absorbed by the new arrivals. Holmes went on the 60-day IL within days of arriving. Gausman landed on day-to-day status almost immediately. The acquisitions didn't stabilize the staff — they just added new fragility on top of the old kind. Moving Cabrera to the bullpen now isn't a fresh idea. It's the organization finally acknowledging what the numbers said in July.

The rotation's surviving core tells the real story of where this team stands. Shota Imanaga has been the workhorse — 33 starts, a 3.99 ERA — but he's also 12-11, which is what happens when the pitching around you bleeds runs. Javier Assad has been legitimately good at 3.55, and Aaron Civale's 1.12 ERA over his last 12 games is the one number in the pitching staff that doesn't require a qualifier. Boyd has been adequate. Taillon was designated for assignment after posting a 7.25 ERA. The rotation's hierarchy, stripped of the deadline additions that were supposed to matter, is thinner than it looked in April.

The bullpen move with Cabrera is being framed, I suspect, as addition by subtraction — get the 6.12 ERA out of the rotation and maybe he finds a shorter-outing role that limits the damage. My read is that this misses the deeper problem. The bullpen is already absorbing innings it shouldn't have to, because the rotation can't generate length. Ben Brown's workload has more than doubled over his last five appearances, a usage spike that signals crisis management rather than strategy. Colin Rea, nominally the closer, has seen his innings per outing collapse over the same stretch. Adding Cabrera to a relief corps already stretched past its limits doesn't solve a depth problem — it redistributes it.

Twenty games remain. The Cubs are holding the fourth NL seed at 79-63, but their run differential over the last ten games has cratered to a fraction of their season pace. The offense is producing nearly two fewer runs per game than it was a month ago. And the rotation overhaul that was supposed to carry them through September has, by any honest accounting, failed. Cabrera moving to the bullpen is the clearest admission yet that the plan didn't work — not a pivot, but a concession. The question now is whether Assad, Civale, and Imanaga can carry enough of the load over the final three weeks to keep the playoff spot that the deadline was supposed to lock up. The numbers say that's a harder ask than it should be.

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