Tracey Pregnancy
Rewatching the Sopranos a third time and Ralph tells people that Tracey was pregnant but it wasn't his kid and Tracey expected him to take care of the baby. At first it seems like an obvious lie but when I think about it more, Ralph was probably telling the truth. Ralph was shown to be Kinky as fuck and doesn't get off on regular sex needed for pregnancy. He probably doesn't enjoy regular sex as he never fucked Valentina. Given that there is a good chance he has never had regular intercourse with Tracey. And after all Tracey was always high and was a whoore so it wouldn't be out of the question for him to be pregnant with somebody else's child. Obviously Ralph could have easily killed her even without her carrying another man's child, but that might be the underlying reason Ralph beat her to death aside from being provoked. Anyway that's my story.