It woudl make sense that a leadoff HR produces more 3+ run innings, except a lot happens in the field when there is a runner in scoring position such as pitching from the stretch, errors, etc that lead to more runners. I know there will be speculation both ways based on theories from scouring the internet. But apparently no one has done the actual statistical research.
I'd like this question answererd once and for all with an actual statistic: on averaage, what leads to big innings (3+ runs)? I read a related stat that stating the probability of a single run scoring with a leadoff walk/hit is 38%, a double 64%.