One Rotation Problem Could Derail The Cardinals Wild Card Push

As the Cardinals chase a postseason berth, lingering doubts about their starting rotation could undermine an otherwise promising season.

The Cardinals have spent the first half of the 2026 season making a lot of people look wrong.

After the roster churn of the offseason - with Nolan Arenado, Brendan Donovan, Sonny Gray and Willson Contreras all traded away - the expectation around the league was that St. Louis would sink toward the bottom of the National League. Instead, the club reached the All-Star break at 50-45, sitting third in the NL Central, 8 1/2 games behind first place and just one game out of a Wild Card spot.

That kind of start would have been hard to predict when the season opened. It’s also why the Cardinals can’t afford to coast through the second half. They’ve bought themselves a real chance, but one spot on the roster could determine whether that momentum holds.

The issue is the starting rotation, and more specifically Matthew Liberatore.

Liberatore was the team’s Opening Day starter, but his season line tells the story of a pitcher who has not yet settled in. He owns a 5.00 ERA across 19 starts. There was a bright spot in his most recent outing on July 11, when he threw six shutout innings against the Atlanta Braves and looked much closer to the early-season version of himself.

The problem is what came before that. From June 6 through July 5, Liberatore posted a 7.71 ERA over 25 2/3 innings in six starts. That stretch is the kind that can quietly drag down a staff if it keeps going.

If the Cardinals are getting the pitcher they saw on July 11, that changes the conversation. If they’re not, the club may have to look elsewhere. Quinn Mathews is sitting as a straightforward option in Triple-A, Hunter Dobbins is another name in the mix, and No. 4 prospect Jurrangelo Cijntje has just been promoted to Triple-A and could emerge as a possibility before season’s end.

For now, Liberatore is the arm to watch. If he keeps trending the wrong way, the Cardinals could have a hard time preserving what they built in the first half. A rotation can only carry so much weight when one-fifth of it is struggling the way Liberatore did.

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