Conversation so far:
what was the profile of y.
a.
tittle?
Tittle threw the ball from a sidearm, almost underhand position, something novel at those times.
was he the only person to do this?
it was common practice in earlier decades.
Are there any other interesting aspects about this article?
he made for a very striking personality.
was he married?
CANNOTANSWER.

Question: what was his biggest accomplishment?
Self-contained rewrite: What was Y. A. Tittle biggest accomplishment?