The Baseline

[Clubmaker2]

Apparently a refresher is needed. Other than the runners lane to first base, the following rules almost always apply. That dirt path between third base and home, means NOTHING!

Baseline Established by Play:
The baseline isn't a fixed, pre-determined line on the field. Instead, it's dynamically created when a fielder is attempting to tag the runner out.
Direct Path:
The baseline is a straight line between the runner's position and the base they are trying to reach when the tag attempt is made.
3-foot Allowance:
A runner has a 3-foot allowance on either side of this straight line. They can move within this 3-foot area without being out.
Avoiding Interference Exception:
There's an exception: a runner can run outside of the baseline to avoid interference with a fielder fielding a batted ball.
Not a Physical Line:
It's important to note that the baseline isn't marked on the field. It's a concept based on the runner's position and the play being made.