Turning Left after Crossing 1B

[CecilOne]

Originally Posted by RKBUmp

You can turn left and come back to 1st as long as you do not make what would be considered an "aggressive" move to 2nd.

I had a coach arguing that the other night. Kept telling me she turned in. Yes she did, but she never made a move to 2nd, so, she is safe.

This is another one of those myths that grow out what coaches teach. Many will teach players to turn right, thereby avoiding subjectivity and simplifying the coaching. That then becomes the players' and others' idea of what the rule is. Add to that the "shorthand" of someone describing a legitimate appeal as "the runner turned left" and you have an eternal myth.
Then throw in the 1st base overrun in the LBR and ...

The way to judge is to JUDGE whether the runner looked headed for 2nd or just turning, usually based on the step or two after completing the turn.