I'm almost positive that you start from the point the game was called with everything counting. Kind of like coming back to a chess table after you have left it mid-game.
I'm almost positive that we start a brand new ball game. 0-0. Play ball!!!
I'm 99.9% sure though! 
What if you broke a major league record in the 3rd inning of a rain postponed game. Are you telling me that the record would be erased just because of rain? I doubt that very seriously.
I'm telling you. Erase tonights inning from your memory completely. According to the record books it never happened. A brand new game will start Thursday at 1:05 and the score will be 0-0. Brad Wilkerson will be up and proceed to strike out and then we go from there.
Trust me on this one.
