BenFred: Cardinals' core has aged better than Jason Heyward and his Cubs

Jason Heyward's St. Louis Comments Add Spice to Simmering Cardinals-Cubs Rivalry, News, Scores, Highlights, Stats, and Rumors

Cubs grant outfielder Jason Heyward his unconditional release - Chicago Sun-Times

Jason Heyward: The Cubs won the battle but not the WAR – Bat Flips and Nerds

3.28.21 SB_S by stltoday.com - Issuu

Cubs: Is this the end of the road for Jason Heyward?

BenFred: Under John Mozeliak's leadership, Cardinals achieved greatness — then let it go : r/Cardinals

2015 Cubs Victories Revisited, October 13: Cubs 6, Cardinals 4 - Bleed Cubbie Blue

Jason Heyward helps Cubs beat Cardinals 9-6 in return from break

Heyward's reason for leaving Cards agitates Matheny

Jason Heyward helps Cubs beat Cardinals 9-6 in return from break

New manager, new vibe, new pace at the plate — but in the end, it's the same old Cardinals