Brewers' World Series dominance exposes a surprising truth about Pirates' biggest weakness

For years, the Pittsburgh Pirates' biggest problem was painfully obvious: They couldn't score enough runs to compete with the National League's best teams. But as the Milwaukee Brewers stand one victory away from a World Series championship, an uncomfortable statistical comparison suggests Pittsburgh's biggest weakness might no longer be its offense.

And that's particularly concerning for an organization that has spent years building its identity around pitching development.

The Brewers' 10-1 demolition of the Tampa Bay Rays in Monday's Game 3 of the World Series put Milwaukee one win away from completing a historic postseason run. But the most revealing comparison between the Brewers and Pirates might come from their regular-season statistics.

Milwaukee finished the 2026 season with 103 wins, a staggering 21 more than Pittsburgh's 82. Given that separation, one might assume the Brewers significantly outperformed their division rivals offensively. But that wasn't necessarily the case.

Milwaukee scored 832 runs during the regular season. Pittsburgh scored 767. That's a difference of just 65 runs across 162 games. Now consider the other side of the equation. The Brewers allowed just 618 runs all season. The Pirates surrendered 739 — a difference of 121 runs.

In other words, the gap between these two teams was nearly twice as large in runs allowed as it was in runs scored. Milwaukee finished with a plus-214 run differential compared to Pittsburgh's plus-28. That's an extraordinary discrepancy for two organizations that entered the season with such different offensive expectations.

Pirates' offensive turnaround has exposed a troubling pitching problem

To Pittsburgh's credit, the offensive improvement was substantial. After finishing last in Major League Baseball with just 583 runs scored in 2025, the Pirates increased that total to 767 in 2026, the sixth-highest mark in baseball. The additions of Brandon Lowe and Ryan O'Hearn helped transform a historically ineffective lineup into one capable of competing with legitimate postseason contenders.

Unfortunately, Pittsburgh's pitching staff took a significant step backward in the process. The Pirates' starting rotation finished 2025 with a 3.71 ERA, tied for sixth in MLB. That figure ballooned to 4.23 in 2026, dropping Pittsburgh into a tie for 15th.

Mitch Keller struggled through a disappointing campaign, finishing with a 5.29 ERA in 22 starts. Even reigning National League Cy Young Award winner Paul Skenes experienced considerable regression, watching his ERA climb from 1.97 in 2025 to 3.82 in 2026.

Of course, Skenes remained an above-average pitcher, and the emergence of Braxton Ashcraft, Jared Jones' impressive September and Bubba Chandler's late-season improvement provide legitimate reasons for optimism. But potential and production aren't interchangeable.

The Pirates entered 2026 believing their starting rotation would be the foundation of a competitive team. Instead, their offensive resurgence helped compensate for a pitching staff that wasn't nearly as dominant as anticipated. And while the rotation deserves scrutiny, Pittsburgh's bullpen instability and overall run prevention cannot be overlooked, either.

Brewers have shown Pirates what a complete contender actually looks like

Milwaukee's success isn't simply the product of a superior lineup. The Brewers have demonstrated an ability to prevent runs, execute defensively and consistently deliver quality pitching performances when their offense isn't producing.

Monday's World Series victory provided another example, with rookie Robert Gasser holding Tampa Bay scoreless over six innings while allowing just one hit. That kind of pitching performance gives a team an enormous margin for error, even before its offense breaks the game open, and it's what the Pirates should aspire to replicate.

Pittsburgh doesn't necessarily need to overhaul its rotation. Skenes, Jones, Ashcraft and Chandler represent an enviable collection of young pitching talent, and there's every reason to believe the group can improve in 2027.

But the Pirates can't simply assume that improvement is inevitable. They need greater consistency from their established starters, more reliable depth behind their young arms and a bullpen capable of protecting leads against elite opponents. And that responsibility ultimately falls on Ben Cherington.

The Pirates spent much of the past offseason addressing their offensive deficiencies, and the results were encouraging. But their pitching regression has created another significant obstacle to closing the gap with Milwaukee.

None of this means the Pirates should abandon their pursuit of additional offensive upgrades, particularly with Lowe's impending free agency threatening to undo some of its progress. It just means they can no longer afford to treat pitching as a problem they've already solved.

Milwaukee didn't win 21 more games than Pittsburgh simply because it had better hitters. The Brewers separated themselves by excelling in areas where the Pirates were supposed to have an advantage.

For an organization that has invested so heavily in pitching development, that might be the most troubling revelation of all.

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