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Two Baselines

The 45-foot line between home and 1B shows where a runner should run to avoid being called out for interference. Both feet must land in the runner’s lane, with the line itself defined as part of the runner’s lane. Contact with the ball is not necessary if, in the opinion of the umpire, the batter runner interfered with the fielder fielding the throw (usually by the catcher or pitcher from in front of home plate).

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