Retouch base after foul ball

[MD Longhorn]

Originally Posted by SanDiegoSteve

The only time this should ever be enforced, and is the purpose behind the rule, is when the runners intentionally linger and don't go anywhere near their base, and are trying to gain an advantage by getting closer to the next base without being detected.

The trick is ... it's really a completely unenforceable rule. They can't be out until the ball is live... but the ball can't be live until they return.