I think they get positioned according to the batted ball metrics. Now that depends on the pitch too and runners on base. You never know if a hitter's going to try to hit behind the runner or pull. You just play tendencies. So postioning can't ever be where you want it to be after the ball is hit.
Hopefully more data helps as he continues to pitch and refine his pitch mix and command.
It would play up as a starter too . Needs more command to be a SP or RP.Doesnt help when the curve is so good like tonight that the ump cNt call the strikes low but definitely in the zine a few time .I mean perfect pitches called balls.