This made me want to look up if bunting a dude over from 1st in the bottom of the 9th is even a good play.
In the bottom of the 9th of a tie game with 0 outs and a runner on first, the home team has a 0.715 win probability.
Teams that successfully bunt change the state of the game to 1 out and a runner on 2nd, which is on average a 0.703 win probability.
So you don't want to bunt a runner from 1st to 2nd in this situation.
An example of a good bunt is when you have a runner at 2nd with no out in the bottom of the 9th. Your win probability is 0.807. Bunt him to third, you now have a runner on 3rd with one out and your win probability goes up to 0.830. (using tables from http://www.tangotiger.net/welist.html)