When and why is “flied” used as the past tense of “fly”?

Question

Why is the form "flied" used in baseball instead of "flew"?

Answer 1

The form "flied" is used in baseball because the verb fly in this case means to hit a fly ball.

It is probably safe to assume that this usage is a transformation of the noun fly ball (also called a fly) into a verb, and noun→verb transformations such as this are often regularized

Answer 2

The term is only useful in baseball in reference to a "fly-ball".

This link has:

When the fly ball is caught by a member of the opposing team, and it is in bounds, the batter is out and the play is recorded as a “fly out.” The batter can then be said to have flied out.