I might agree with that if the difference wasn't nearly a whole R/G after 120 games. Perhaps there's something more at work here, like the confidence level of the pitchers ?? You still can't draw anything of note from the R/G totals by themselves. You could guess, and you might be right, but there's no way of knowing. For instance, look at this stat CUBS' Runs scored per game when Soto starts 3.93.... when K Hill starts 5.15 Why are the Cubs scoring over a R/G more when Hill hits even though he's been worse statistically than Soto? Because there are lots of other variables involved. Try to focus now, IMB. You're all over the place. We started out talking about the effect of a catcher on the teams' ability to prevent runs; basically CERA. The only conclusion that I came to was that I don't think the difference can be completely explained away as white noise because it's too large. I didn't, as you said, "draw anything" from the R/G totals by themselves. I was speaking of the difference in the pitchers' ERA with the two catchers, and for the record, I wasn't basing my remarks on just 3/4 of a season; although I didn't reveal it, K Hill smoked Soto in this department last year by an even bigger margin...... 2.46 to 3.88. Now you want throw in the offensive R/G stats into a discussion of the defensive effect of a catcher ??? How is that relevant ?? Sure, I know I posted it, but it's really unrelated to our discussion. It's nothing more than an interesting anomaly. I drew no conclusions from it, and probably shouldn't have posted it. I didn't mean that you specifically had drawn a conclusion from it, just that it wasn't a good idea. The offensive stats I postsed were just an example of how useless something like this is on its own. The offense has performed much better with Hill in the lineup rather than Soto even though Hill has been statistically worse. Does that mean that we should start Hill because of his effect on the Cubs offense? Of course not, so we throw that out. Maybe Hill is a better game caller and understands pitching better than Soto, it's definitely possible, but you just can't tell from a sample of 200-300 games. Maybe he's caught games against worse opponents, or maybe he's caught better pitchers or maybe he's caught more games when the wind was blowing in, I mean, who knows? That's the point, you can't see that from just looking at straight numbers, and unless you feel like doing extra research, the stats are nothing more than something interesting to theorize about.