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# Why are there 2 first base lines?

Updated: 12/16/2022

Wiki User

16y ago

Well, there aren't really. The line to the left is the first base line and the line to the right is the 'out of bounds' line. These two lines form the 'restraining box' and when a runner runs to first base they are supposed to stay within this box. If the runner runs outside of the restraining box they can be ruled out for interference should a thrown ball hit them.

Wiki User

16y ago

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Q: Why are there 2 first base lines?
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