Conversation so far:
Was Jack Worrall a football player?
John Jack Worrall (20 June 1861 – 17 November 1937) was an Australian rules footballer who played for the Fitzroy Football Club in the VFA, and a Test cricketer.
What was Jack Worrall's position?
Worrall played as a rover

Question: What was good about him being a rover?
Self-contained rewrite: What was good about Jack Worrall being a rover?