Cardinals not concerned after Arenado exits with back tightness?
Steven Matz exits start against Pirates with injury
Cardinals throw rotation derby 'wide open' as Flaherty has shoulder inflammation treated, will start on IL
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Cardinals' Nolan Arenado exits game after being hit by pitch
Cardinals vs. Phillies Wild Card predictions, pitching matchups and what you need to know - The Athletic
Arenado leaves Wednesday with lower back tightness
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Nolan Arenado leaves with back tightness as St. Louis Cardinals 'get after it,' win 11th in a row - ESPN
Cardinals' Arenado leaves game with back tightness
Johan Oviedo enjoys 10-strikeout gem, but Pirates offense has tough-luck night against Cardinals
