1) Pitcher fakes to third

2) Runner on first takes off to second

3) Pitcher throw to second

 

That is legal if the pitcher disengages the rubber after his fake to third. At that point he becomes a fielder and cannot be called for a balk.

@Clyde?

 

Correct. I've done that numerous times in HS and College. Tried to get a run down to allow the runner at third to score, step towards third and the runner on first takes off for second, spin and let loose to the second and start a rundown. Completely legal

1) Pitcher fakes to third

2) Runner on first takes off to second

3) Pitcher throw to second

 

That is legal if the pitcher disengages the rubber after his fake to third. At that point he becomes a fielder and cannot be called for a balk.

@Clyde?

 

Once the pitcher legally fakes to third in this scenario he can do anything after that. Disengaging is not a requirement in this play (besides it's almost physically impossible to fake to third and spin to throw to second).

 

In theory if there was only a runner on 3rd base (i.e. no runner on first) he could fake the throw to third and then still throw to any base. As long as the initial fake is to an occupied base it's all good after that.