Boyd's World-> Breadcrumbs Back to Omaha-> DERA for Relievers About the author, Boyd Nation

DERA for Relievers

Publication Date: December 17, 2002

Left Tackle? Small Forward? Sweeper?

The subjects of my attention this week have a couple of things in common: They're very important to their teams fortunes, and you've never heard of them. OK, there are a couple you've heard of, but for the most part, relief pitching, especially if you're never had any of that magic closer dust sprinkled on you, is as thoroughly an unsung job as there is in baseball. To contribute even more thoroughly to that problem, relief work can be much harder to measure statistically than just about any other part of the game. ERA doesn't work very well because the most important runners a reliever faces get credited to someone else if he messes up and they score. The best-known relief stat, saves, is so stupidly defined as to be outrageous if there weren't other, sillier stats like pitching wins or RBI's around to distract from it. There have been a couple of good relief stats developed in the last few years based on play-by-play analysis and comparing how likely the team is to win when a reliever enters compared to how likely they are to win when he leaves, but those require much better play-by-play data than I can hope to gather.

There is a little hope, though. A couple of weeks ago, I took a look at the notion of defense-independent ERA -- an attempt to measure a pitcher's success independent of the defense behind him and his luck. You can re-read that study for more information, but the important piece here is that there's no inherent reason I can find that it shouldn't work just as well for relievers, especially for comparison among themselves. The reduced innings for relievers combined with the generally higher leverage of those innings makes it hard to compare them with starters still, but at least we can get some feel for how a pitcher did by looking at his DERA.

For the purposes of this discussion, I arbitrarily defined a reliever as a pitcher with at least ten appearances and no more than three starts. I'm willing to look at other pitchers who seem to be relievers but don't meet this definition if you want to point them out, but I had to start somewhere. I'm not going to spend as much time going over these as I did with the starters, since the comments would tend to be of the same sort.

Here are the top ten relievers from last year by DERA:

Team                      Pitcher                    DERA  ERA

Villanova                 James Russell              2.65  2.33
Central Connecticut State Lew Pappariella            2.66  2.52
Baylor                    Kyle Edens                 2.66  3.44
Auburn                    Steven Register            2.68  3.00
Illinois State            Jeremy Accardo             2.71  2.53
Texas                     Brantley Jordan            2.74  2.96
Illinois-Chicago          David Haehnel              2.74  1.08
Princeton                 Thomas Pauly               2.74  1.43
Indiana                   Ryan Smith                 2.75  3.06
New Orleans               Barry Melancon             2.75  7.59

For comparision, here are the top ten relievers from last year by ERA:

Team                      Pitcher                    DERA  ERA

Houston                   Jesse Crain                4.03  0.00
Delaware                  Steve Harden               2.94  0.69
Texas Tech                Adrian Soto                3.60  0.84
Birmingham-Southern       Tyler Sullivan             3.14  0.87
Texas                     Huston Street              2.94  0.96
East Carolina             Kieran Mattison            3.12  1.04
Illinois-Chicago          David Haehnel              2.74  1.08
Dartmouth                 Nick Peay                  2.87  1.29
Coastal Carolina          Jake Hurry                 2.82  1.35
Florida                   Connor Falkenbach          3.34  1.40

The ten most underrated by ERA:

Team                      Pitcher                    DERA  ERA

Virginia Military         Matt Liffick               4.51 16.66
College of Charleston     Phillip Wilkins            3.04 14.19
Texas A&M-Corpus Christi  Danny Luna                 5.02 15.79
Georgetown                Travis Danysh              4.26 14.81
Canisius                  Tim Smith                  4.17 14.43
Marshall                  Mickey Plymale             5.44 15.15
Wright State              Eric Oberding              3.52 13.11
Vanderbilt                Scott Shapiro              4.19 13.74
Furman                    Jon Stallsmith             3.99 13.15
California                Blake Read                 3.32 12.19

How do you get 12 appearances with a 16.66 ERA? Have a coach that apparently understands that you weren't actually that bad.

The ten most overrated by ERA:

Team                      Pitcher                    DERA  ERA
Houston                   Jesse Crain                4.03  0.00
Texas Tech                Adrian Soto                3.60  0.84
Wichita State             Steve Haines               4.66  2.28
Birmingham-Southern       Tyler Sullivan             3.14  0.87
Delaware                  Steve Harden               2.94  0.69
George Washington         Justin Orenduff            3.93  1.68
Central Florida           Von Stertzbach             3.92  1.81
Kent State                Ben Galbreath              4.51  2.42
East Carolina             Kieran Mattison            3.12  1.04
George Washington         Mike O'Connor              4.12  2.06

Again, bear in mind that none of these last guys are actually bad; they just weren't as good as their ERA's would tend to indicate.

And, as with last time, I'll close with a list of all the qualifiers.

If you're interested in reprinting this or any other Boyd's World material for your publication or Web site, please read the reprint policy and contact me

Google

Boyd's World-> Breadcrumbs Back to Omaha-> DERA for Relievers About the author, Boyd Nation