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Quick and dirty look at Arizona Diamondbacks ZIPS & Steamer projections

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As most of you know, Fangraphs provides Depth Chart projections which are Steamer and ZIPS projections averaged. But right now if you click on the Depth Chart link, ZIPS is not included yet and it's really all just Steamer. ZIPS is rolled out team by team during the offseason, and then within a week or so of all of them being rolled out, then they fold the ZIPS into the Depth Chart projections. Figure around when Pitchers and Catchers report.

Disclaimer:

These projections are not mine, but if I did my own, I would not come up with much different or better than these. If you don't like projections, thats cool. To each his own. No need to tell us you think Projections are B.S. Many people enjoy looking at them, and they are in fact useful tools and every team in MLB uses them. Generally good projection systems can get hitters "right" about 70-75% of the time and pitching projections barely over 50%. For me the interesting part is the Macro look. This guy may end up over, and that guy may end up under, but at the end the TEAM should be close. Sometimes you get 80% of the players performing over, like last year, and you get a surprise playoff team. Sometimes you get most of them going under, and you get a disappointment, like 2016. Sometimes 80% of the projections are "wrong", in that half the guys were way over and half way under, but the TOTAL ended up about where expected. Projections are a baseline, a STARTING point to start figuring out where we are. Everyone can and should have their personal "over and unders". Thats half the fun !

ZIPS

Steamer Batters

Steamer Pitchers

HITTERS

I decided to just look at wRC+ for hitters. I'm just trying to get the "quick and dirty" on where the projections see these guys. Counting stats like HR, RBI, Walks, K's, etc are playing time dependent, and it's impossible to know who will get hurt or who will get in the manager's dog house. So I like to look at rate stats at this stage. But even then, I prefer the park adjusted metrics, as ZIPS and STEAMER may be using different league run scoring environments, so triple slash BA/OBP/SLG is impacted by that. So for now just looking at wRC+ to keep it simple. If you are not familiar or not sure about wRC+, I suggest reading This Link before proceeding further.

  • Below table is ranked by the highest avg between ZIPS and STEAMER wRC+ projection.
  • I also show what the hitter did in 2017 vs 2018 Projection. I am comparing against 2017 because comparing to career would be much closer and seeing the gap between 2017 and projected helps combat "recency bias"
  • Players that played most of their time in minors in 2017 show their 2017 minor league wRC+ They will show the largest differences between projected and 2017 of course, because 2017 was in MiLB
  • This table is all the players on the 40 man roster PLUS JD Martinez, just for context.

Name Steamer ZIPS avg 2017 avg-2017
Paul Goldschmidt 137 131 134.0 142 -8.0
JD Martinez 130 137 133.5 166 -32.5
A.J. Pollock 108 112 110.0 103 7.0
Jake Lamb 107 108 107.5 111 -3.5
Yasmany Tomas 98 104 101.0 89 12.0
David Peralta 101 99 100.0 104 -4.0
Alex Avila 94 94 94.0 124 -30.0
Ketel Marte 94 90 92.0 89 3.0
Christian Walker 89 94 91.5 147 -55.5
Brandon Drury 91 81 86.0 92 -6.0
Daniel Descalso 83 78 80.5 88 -7.5
Chris Owings 78 80 79.0 85 -6.0
Jeremy Hazelbaker 75 80 77.5 111 -33.5
Domingo Leyba 71 78 74.5 131 -56.5
Ildemaro Vargas 72 74 73.0 111 -38.0
Chris Herrmann 74 67 70.5 58 12.5
Nick Ahmed 64 70 67.0 76 -9.0
John Ryan Murphy 66 61 63.5 89 -25.5
Socrates Brito 63 64 63.5 100 -36.5
Jack Reinheimer 59 58 58.5 83 -24.5
Jeff Mathis 56 35 45.5 51 -5.5

A few more points about above table:

The only players showing better than last year are Tomas, Herrman, Pollock and Marte

In Herrman and Tomas' case, hard to imagine them being quite that bad again, & it's not hard to see Pollock as doing better based on his history, and the improvement for Marte while not big, is good to see.

Every other player is projected to be off last year's production. A lot of this is just regression. But the big drops for Avila, and Martinez if he is actually around should be noted. Avila takes Chris Iannetta's place , who had a 120 wRC+ last year. A full season of Tomas, (101 wRC+? fingers crossed) would be taking the place of JD Martinez. And even if JD Martinez 2018 is taking the place of JD Martinez 2017 it's still likely to be at a lower level than last year's full season 166, let alone the 172 he had with Arizona.

Bottom line: Without JD Martinez or another upgrade somewhere, on paper this offense is projecting to be significantly worse than last year. And even if JD comes back, they are STILL projected to be a little worse.

STARTING PITCHERS

On the pitching Side, I'm just showing ERA and FIP. Unfortunately the Steamer projections are not showing ERA- or ERA+, so no choice but to go with unadjusted ERA and FIP. I separate by role, but don't bother with IP projections or counting stats either. I included more minor league guys not on the 40 man roster, as over the course of the season more chance some of these get added.

Name sERA sFIP zERA zFIP avg ERA avgFIP 2017 ERA avg-2017 2017 FIP avg-2017
Robbie Ray 3.63 3.62 3.61 3.38 3.62 3.50 2.89 0.73 3.72 -0.22
Zack Greinke 3.80 3.76 3.48 3.53 3.64 3.65 3.20 0.44 3.31 0.34
Zack Godley 4.05 3.99 4.01 3.98 4.03 3.99 3.37 0.66 3.41 0.58
Patrick Corbin 4.21 4.22 4.29 4.18 4.25 4.20 4.03 0.22 4.08 0.12
Anthony Banda 4.05 4.14 4.61 4.49 4.33 4.32 5.39 -1.06 4.72 -0.41
Taijuan Walker 4.51 4.41 4.38 4.49 4.45 4.45 3.49 0.96 4.04 0.41
Shelby Miller 4.60 4.50 4.50 4.36 4.55 4.43 4.09 0.46 3.57 0.86
Kris Medlen 4.10 4.13 5.47 5.36 4.79 4.75 4.95 -0.17 4.36 0.39
Jon Duplantier 4.82 4.85 NA NA 4.82 4.85 1.39 3.43 2.89 1.96
Taylor Clarke 5.07 5.14 5.51 5.57 5.29 5.36 3.35 1.94 3.87 1.49
Braden Shipley 5.12 5.10 5.56 5.55 5.34 5.33 5.66 -0.32 5.92 -0.60

Key Takeaways:

  • These are ranked by avg ERA projection
  • When comparing vs. 2017, negative numbers = better, positive numbers = worse
  • Although most of the SP from last year projecting significantly higher ERA than last year, which was to be expected it's still showing good depth. Even Walker and Miller's ERA translate to over 100 ERA+. Remember, last year's team 131 ERA+ was HISTORIC.
  • The projections really like Banda, and really kinda hating on Walker.
RELIEF PITCHERS

Name sERA sFIP zERA zFIP avg ERA avgFIP 2017 ERA avg-2017 2017 FIP avg-2017
Archie Bradley 3.48 3.42 3.33 3.12 3.41 3.27 1.73 1.68 2.61 0.66
Andrew Chafin 3.50 3.59 3.64 3.28 3.57 3.44 3.51 0.06 3.39 0.04
Jared Miller 3.65 3.81 3.49 3.56 3.57 3.69 2.93 0.64 2.73 0.96
Randall Delgado 4.19 4.17 3.82 3.73 4.01 3.95 3.59 0.42 3.16 0.79
Jimmie Sherfy 3.81 3.84 4.61 4.75 4.21 4.30 3.12 1.09 3.62 0.68
Fernando Salas 4.38 4.36 4.37 3.96 4.38 4.16 5.22 -0.85 3.92 0.24
Yushihisa Hirano 4.38 4.41 4.38 4.41 NA NA NA NA
Rubby de la Rosa 3.74 3.66 5.06 4.98 4.40 4.32 4.70 -0.30 4.98 -0.66
Brad Boxberger 4.11 4.15 4.71 4.85 4.41 4.50 3.38 1.03 3.43 1.07
T.J. McFarland 4.11 4.20 4.73 4.39 4.42 4.30 5.33 -0.91 4.10 0.20
Silvino Bracho 4.19 4.21 4.74 4.63 4.47 4.42 5.66 -1.20 4.90 -0.48
Jake Barrett 4.49 4.52 4.61 4.40 4.55 4.46 5.00 -0.45 6.27 -1.81
Joey Krehbiel 4.37 4.43 4.76 4.83 4.57 4.63 3.27 1.30 2.66 1.97
Neftali Feliz 4.49 4.54 5.03 4.94 4.76 4.74 5.48 -0.72 5.66 -0.92
Matt Koch 4.57 4.55 5.10 5.01 4.84 4.78 7.71 -2.88 6.51 -1.73
Albert Suarez 4.26 4.27 5.63 5.46 4.95 4.87 5.12 -0.18 3.79 1.08



  • Archie's ERA projected to double from last year. That is some mean ass regression. Hope thats wrong
  • Jared Miller and Jimmie Sherfy project as guys that are ready to step up, which Sherfy already did last year but may be challenged to win spots perhaps due to all the veterans signed.
  • Boxberger and McFarland have some scary projections.
  • Of the reclamation projects, (Sala, Feliz, Suarez) the projections like Salas the best


Final Thoughts:

Depending on the system, and how you allocate playing time, you can probably come up with anywhere from 82-85 wins for the current roster. I personally think the pitching staff will be good again, but hardly expect a team 131 ERA+ again. They should be above average, say 105-115 is definitely within reach for this team.

On the offense, I am concerned. I see a lot of red flags and worry the offense could be well below average in 2018. The younger players you hope will step forward are a year older and still not projecting all that well. (Owings, Drury, Ahmed of course, all have bad projections and even Lamb is simply treading water. ) Who knows what we'll get from Tomas, and even though I put him in these tables, I'll believe JD will be back when I see the whites of his eyes in Spring Training. But if my concerns prove to be unfounded and the offense can be league average again, then they have a shot to return to the post season.