Pitches with runners on for starters

Would anyone like to make an educated guess at the percent of pitches thrown with runners on, starting pitchers who win games throw, as opposed to the number of pitches WRO starters throw when they win?

I’ve run the numbers for the team I score for, and although those numbers surely don’t reflect all pitcher at all levels, or certainly even pitchers at the HSV level, they are at least real numbers, and are interesting to me.

The main reason I ask is, I’m doing some new things along those lines with metrics, but also because our P’s and C’s were allowed to practice all last week, and I doubt they spent more than 20-25% of their time working in situations WRO.