Conversation so far:
Was Tom Glavine married?
Tom Glavine and his wife Christine have five children.
What was Tom Glavine's education?
Tom Glavine attended Billerica Memorial High School, where he was an excellent student and a letterman in ice hockey as well as baseball.

Question: What was his favorite, or prefered, hobby other than baseball?
Self-contained rewrite: What was Tom Glavine's favorite, or prefered, hobby other than baseball?