Conversation so far:
What was Y. A. Tittle's playstyle?
Y. A. Tittle threw the ball from a sidearm, almost underhand position, something novel at those times.

Question: Did he choose that style of play or did it come to him naturally?
Self-contained rewrite: Did Y. A. Tittle choose to throw the ball from a sidearm or did it come to him naturally?