I am not sure if there is a steadfast rule in baseball, but in Baketball the rule is to go for a tie at home, win on the road - obviously that is when trailing, having the lead makes it a little different. I would guess that it is a little differebt in baseball, in that other factors would play a big role (available pitchers, what part of the lineup is due up, etc.) All of that being said, I definately would NOT have been that aggressive, extra innings is not going to LOSE you the game, the outcome last night will 99% of the time.