Cardinals-Pirates series postponed; St. Louis will miss fourth straight series due to COVID-19 outbreak CBS SportsMLB postpones Cardinals' series against Pirates after more test positive for Covid-19 CNNPirates-Cardinals three-game series postponed FOX 2 St. LouisLane Thomas Tests Positive For COVID-19 MLB Trade RumorsEntire Pirates-Cards 3-game series postponed over virus woes KMOV St.