The Reds sign Mark Prior and comparing Devin Mesoraco to Ryan Hanigan

Boy, wouldn’t this news have been great 10 years ago: Mark Prior is in camp with the Reds. As reported by John Fay, he apparently called Dusty and asked for a chance and it was granted to him. Last season he pitched with the Red Sox AAA team and posted a 3.96 ERA in 25 innings. That came with 23 walks and 38 strikeouts though. Apparently there is still some stuff there by checking out the strikeout rate, but the control seems to be a big issue. I am going to go back and look at some video on Milb.tv this afternoon and see what he has left.

update on Prior

I am watching his game from June 5, 2012 right now. He was working 88-92. His curveball still can be very good, but it was not quite as good a few times in this game. The control looked decent, but this might have been one of his “on” games given he had 5 strikeouts in 2 innings. He seems to be short arming the ball a little bit, but I haven’t gone back to see if he did that when he was healthy either.

I got into an interesting debate about the usage of Devin Mesoraco over the past 36 hours. I know that we strangely enough debate this topic on the site probably twice a month, but I actually sat down and ran some numbers. I am going to actually get into some of that now. But first, let’s start with some talking points.

  • Ryan Hanigan is an excellent catcher who is lauded for his handling of pitchers, ability to catch/block/frame anything and has a strong and accurate arm. He was the primary catcher for the Reds #1-3 starters in the rotation as well as Aroldis Chapman.
  • Devin Mesoraco is by advanced catching defensive stats a good pitch framer, but not as good as Hanigan (only 2-3 guys are). He has a strong and accurate arm and also rated out as a solid pitch blocker. He was the primary catcher for the Reds #4 and 5 pitchers and was often pulled in the second half when Chapman came into the game (usually in a double switch scenario).

As I have stated before, I really don’t like catchers ERA. One of the big reasons is what I laid out above. Guys catch different pitchers and that can really play a big role in the “ERA” of a catcher. Still, it is often a very strong point brought up in the Mesoraco/Hanigan playing time debates. What I did was look at the relievers splits with each catcher though, since both guys caught them all year long. I looked at only pitchers with 30 innings pitched or more in the bullpen (that means no Broxton and no late season call ups, but everyone else is included). I also included the numbers for all relievers with 30 innings, excluding Aroldis Chapman. I did that because as noted earlier, Ryan Hanigan wound up with a whole lot more innings with him than Mesoraco did and that is most certainly going to skew things like ERA and strikeouts in his favor given how dominant Chapman was. Here are the numbers:

All Relievers with 30+ IP including Aroldis Chapman
Catcher ERA K% nIBB-BB% K/nIBB CS% Pitchers w/better ERA
Catcher A 3.25 26.4% 9.1% 2.90 30.0% 4
Catcher B 2.44 27.2% 9.2% 2.95 37.5% 3
All Relievers with 30+ IP excluding Aroldis Chapman
Catcher ERA K% nIBB-BB% K/nIBB CS% Pitchers w/better ERA
Catcher A 3.22 24% 9.2% 2.61 30% 4
Catcher B 3.02 22% 9.4% 2.35 44% 2

In the top chart, there is a big gap in ERA between the two catchers. Their walk rates and strikeout rates are nearly identical though. Catcher A also holds the advantage in a better ERA with more pitchers, 4-to-3. In the bottom chart, there is still a bit of an ERA gap, but it is much closer than before. We also see that Catcher A now has a better strikeout rate, retains his better walk rate and better K/BB rate as well as extends his lead of a better ERA with the pitchers to 4-to-2.

You guys are pretty smart, so I know that you know which catcher is which here. But when looking at this data, it certainly doesn’t seem as clear as to which guy is truly a “great defensive catcher” versus “the other guy” who isn’t allowed to catch some of our guys is it?

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Doug Gray is the owner and operator of this website and has been running it since 2004 in one variation or another. You can follow him on twitter @dougdirt24, contact him via email here or follow the site on Facebook. and Youtube.