I thought the more statistically inclined of you might find this interesting:
Fun little toy to play with.
For instance, home teams with a 9-3 lead heading into the top of the 9th won:
3061 times out of 3062 from 1979-1990
572 times out of 574 from 1991-1998
412 times out of 413 from 2000-2004
No data after 2004, which of course means this abomination wasn't included.