Possible to get historical in-game data?

I don't know if there is a term for it... but I've been having some success hedging my bets during the game, for example, the other night I took MIA TOR - over 189 for 55 to win 50, and took the LiveBet under of 199.5 at 60 to win 50. Minimizes my risk drastically and in some cases, like this one, I hit both bets for +$100 as the game ended at 191. Is there a term for doing this?

Anyway, back to my question. Is there a good source for historical in game data? I'd like to look at these numbers and possibly figure out a way to be more analytical about this as opposed to just winging it.