Now it's illegal to erase the line and you're called out.
Not true for most rule sets. High school is an exception. They do have a rule against intentionally erasing lines. But the penalty isn't an out. On the first offense it's a strike if an offensive player erases a line, or a ball if it's erased by a defensive player. A team warning is issued and a subsequent violation results in a ball/strike plus restriction to the bench of the player and head coach.
NCAA also prohibits erasing field lines. Besides those two, I'm not aware of any others that do.
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