Conversation so far:
What did Epstein do for the Cubs?
He became President of Baseball Operations for the Chicago Cubs.
When did Theo Epstein join the Cubs?
On October 12, 2011, Epstein agreed to a five-year contract worth $18.5 million with the Chicago Cubs.

Question: what did Theo do for the cubs? (positively)
Self-contained rewrite: What did Theo Epstein do for the Cubs (positively)?