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Cardinals rotation competition: who holds the edge?

Original: Who leads in the Cardinals’ rotation competition? Sep 22, 2026; Pittsburgh, Pennsylvania, USA; St. Louis Cardinals pitch

The St. Louis Cardinals' pitching rotation battle is drawing attention as young left-handers Quinn Mathews and Cooper Hjerpe appeared with the team before a September 22, 2026 game against the Pittsburgh Pirates at PNC Park. Fans and analysts are weighing which of the club's promising arms will claim a spot in next season's starting rotation.

Why now: Fans are debating which young Cardinals pitchers will win rotation spots heading into the offseason.

St. Louis CardinalsQuinn MathewsCooper HjerpePittsburgh PiratesPNC Park

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Rank over time, top of the chart is #1. 2 snapshots from 3 h ago to 3 h ago.

Evidence

• Who leads in the Cardinals’ rotation competition? Sep 22, 2026; Pittsburgh, Pennsylvania, USA; St. Louis Cardinals pitcher Quinn Mathews (60) and Cooper Hjerpe (56) walk on the field before the game against the Pittsburgh Pirates at PNC Park. Mandat… https://… · cardinals@gamefan.net · 1

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