fair or foul

Fred asked: Pop up lands between pitcher's mound and second base.

Ball is untouched, the spin of the ball causes the ball to roll into foul territory between home plate and third or first]base.

Fair or foul?

P.S. I'm thinking of imaginary line connecting first base and third base and any ball landing past that imaginary line is automatically fair whether rolling into foul territory untouched or not.
Sincerely,
Fred


Rick answered: Fred, thank you for your question.

Definition: A fair ball is a batted ball that settles on fair ground between home and first base, or between home and third base, or that is on or over fair territory when bounding to the outfield past first or third base, or that touches first, second, or third base, or while on or over fair territory touches the person of an umpire or player, or that, while over fair territory, passes out of the playing field in flight.

A foul ball is a batted ball that settles on foul territory between home and first, or between home and third base, or that bounds past first or third base on or over foul territory, or that first falls on foul territory beyond first or third base, or that, while on or over foul territory, touches the person of an umpire or player, or any object foreign to the natural ground.

A foul fly shall be judged according to the relative position of the ball and the foul line, including the foul pole, and not as to whether the infielder is on foul or fair territory at the time he touches the ball.

It would only be a fair ball, were it to roll across the foul line beyond first or third base, after having landed in the infield untouched.

Yours in baseball,

Rick