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Anthony Edwards starred on "ER" as Dr. Mark Greene for eight seasons before his character's heartbreaking death. Here's why ...

The Pitt star and ER superfan Patrick Ball, who co-stars with ER alum Noah Wyle, posted a photo of himself alongside ER star Anthony Edwards.

Dr. Frank Langdon, meet Dr. Mark Greene. Noah Wyle's medical TV worlds collided this week when The Pitt's Patrick Ball crossed paths with ER's Anthony Edwards.

Since Noah Wyle is the star of The Pitt, we do get to see an ER actor interact with the cast of HBO Max’s hit medical drama ...