Spent some time lately with 1st inning prop bets. I think I have it tweaked enough to start betting with small. Basically, I use first inning only stats to come up with a projected percentage of the chance of a run being scored in the first inning, and then compare it to the available line and take anything with value. I personally am going to play it as a 4 game martingale chase. There is a reason I think this one warrants one. I will document the results both in chase and flat betting form here.