Stealing base on foulball

[Guest Lioma]

What happens if a base runner steal right before the pitch, then the batter hits a foul ball?

[beerguy55]

Just now, Guest Lioma said:

What happens if a base runner steal right before the pitch, then the batter hits a foul ball?

Unless the runner reaches second base before the pitcher starts his pitching motion the runner would need to return to first base on a foul ball.

The same rule/standard applies on a caught fly ball in determining which base the runner must return to tag up.

[Mister B]

If he acquires the stolen base before the pitch, it's a stolen base, otherwise it's a foul ball and he goes back. 

[ArchAngel72]

In Little League they would be penalized for leaving early and be sent back.

 

[mac266]

A foul is a dead ball, so runners must return.  Others have pointed out the exception:  If the runner gets all the way to the next base and legally touches the next base BEFORE the pitcher starts his motion, he gets to keep that base because it's the last legally touched base before "time of pitch" (i.e. beginning the pitching motion).  It is exceptionally rare for a pitcher to let a runner go 90 feet without moving, but I have seen it happen one time when I still worked kiddie ball.  I haven't seen it in high school or above, though.