What you do following an injury will depend on the injury and the degree of the injury.
What is the cause of the calf/hamstring damage in the past?
Sounds like a running technique issue.
An MWod Model for Post Surgery/Post Injury Rehab
Post 400: Movement Hierarcy- Movement Complexity, Injury Rehab, and Making the Invisible Visible
Episode 65: Recovering Slack, Post Injury