Archive for Diamondbacks

Reintroducing David Peralta, Underrated Triples Machine

I’m always looking for new angles on National League outfielders. There are only so many of them, and only so many things can be said about the same few juggernauts.

For example, I discovered just now that Randal Grichuk has recorded the fourth-highest wins above replacement (WAR) per plate appearance for NL outfielders behind only Bryce Harper, Giancarlo Stanton and Andrew McCutchen. It certainly surprised me, and while that’s a storyline in itself, Karl de Vries assessed Grichuk here last month, highlighting reasons for optimism and concern. (For example, his batted ball profile validates his power display but thinks his batting average deserves to drop around 45 points.)

In this same vein, it may surprise you to know the infrequently discussed David Peralta ranks seventh in WAR per plate appearance among NL outfielders with as many plate appearances as him (275) and 10th in aggregate WAR. Those figures account for his defense that, according to the metrics, rates average at best, so his value is driven primarily by his bat.

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An Investigation (and Validation) of Rubby’s Improvements

Rubby de la Rosa twirled a gem Monday night.* It was a night of several unlucky fantasy pitching performances: Corey Kluber, Chris Sale, Matt Harvey and John Lackey together struck out 34 batters and allowed only three runs in a combined 32 innings pitched, and the Twitterverse made sure everyone knew.

Yet there was de la Rosa, plugging away against the Marlins (and against Dan Haren, who admirably tossed eight innings of two-run ball in defense), needing only 94 pitches to get through a full nine innings of play. Rubby, too, settled for a no-decision, his due to a poorly timed two-run homer allowed to J.T. Realmuto in the 7th inning.

I was reluctant to invest in Rubby at first, remembering his wholly disappointing 2014 season. (In his defense, he was never really a touted, let alone highly touted, prospect, even within the Dodgers and Red Sox systems, so the term “disappointment” is used loosely here.) However, I have bought several shares of Rubby in the past couple of weeks due in large part to a smattering of injuries but also a series of respectable performances by de la Rosa.

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The 2015 Michael Brantley: A.J. Pollock

It was a wonderful, magical age 27 season for Michael Brantley last year. He wound up as the 4th most valuable asset according to Zach Sanders’ 2014 End of Season Rankings with a 24HR-94R-97RBI-23SB-.327 line based on a career-best isolated slugging rate 55+ points beyond his career rate. From 2011 to 2013, his ISO rates were .118, .114 and .112. A .178 last year was almost 40 points higher than the average outfielder ISO rate.

For all hitters between 25 and 29 (the magical 27 +/-2),  Michael Brantley had the 2nd best contact rate (91.3%) after Ben Revere. His contact rate was two standard deviations from the mean. His ISO was .78 standard deviations from the mean. His combined contact+ISO z-score was 2.78, which ranks 2nd overall in this age group, which was sandwiched between Troy Tulowitzki and Buster Posey:

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Building a Closer Through Outcomes

There are a sundry of middle/set-up relievers that can succeed in the closer role if given the opportunity. A few obvious: Wade Davis if something happens to Greg Holland… Wil Myers for James Shields and who?!; Ken Giles if the Phillies can somehow find a trade partner for the grundle-grabber; and Brad Boxberger if not Jake McGee. I assume David Robertson signs elsewhere and Dellin Betances steps in.

Lets’ look at potential closers using reliever outcomes. Here are the average contact and balls in play-related outcomes for all relievers that qualified and specifically relievers with 10+ saves:

Command: K% BB% K-BB% Ct% SwStr% Zn% F-Str%
AVG for RP w/ > 10 SV 0.27 0.07 0.19 0.75 0.12 0.46 0.63
SD for RP w/ > 10 SV 0.08 0.03 0.08 0.06 0.03 0.04 0.04
AVG for all qualified RP’s 0.22 0.09 0.14 0.77 0.11 0.45 0.60
SD for all qualified RP’s 0.07 0.03 0.07 0.05 0.03 0.04 0.05
Balls In Play: GB% FB% IFFB% GB/FB HR/FB LOB% BABIP
AVG for RP w/ > 10 SV 0.43 0.37 0.11 1.40 0.08 0.78 0.275
SD for RP w/ > 10 SV 0.11 0.10 0.04 1.02 0.05 0.08 0.042
AVG for all qualified RP’s 0.45 0.35 0.09 1.50 0.09 0.75 0.289
SD for all qualified RP’s 0.10 0.09 0.05 0.81 0.05 0.08 0.044

Our Filters: 

  • Contact-related outcomes: For K-BB%, Ct% and SwStr%, I filtered simply by the general relief pitcher averages. Everyone below average in these 3 categories was filtered out.
  • Command-related outcomes: For zone% and first-pitch-strike%, I used 1 standard deviation below average and 1.25 SD’s below average in BABIP as filters. 1.25 SD allowed me to omit only the relievers that had career BABIP’s higher than we would like to see for a closer or in general. I didn’t want to screen out Jenrry Mejia (1.24 SD below the mean) or Tim Stauffer (1.19 SD below), because there’s a possibility for BABIP regression.
  • Balls In Play-related outcomes: I was lax on the balls in play outcomes. I went with a 40% Grounder rate and 45% Flyball rate as my filters versus the averages that you see above because below average fly-rates don’t mean much in places like Tampa (where Boxberger is elite but below average in fly-rates); and above average grounder-rates don’t mean as much with atrocious defense behind you (hence Corey Kluber’s unlucky BABIP, which should have been closer to .299 per end-of-season xBABIP/Inside Edge data), but I digress.

Using these filters, we’re left with a robust list of above-average relievers beyond just closers (scroll down for the noted filters):

What happens if we use the command (K-BB%)/contact (Ct% and SwStr%) related averages for relievers with more than 10 saves this year? 

…We’re left with some elite closers and then a few interesting names.

Last year, Danny Farquhar (just missed the list this year) had a top 20 swinging-strike rate – about a percent better than Fernando Rodney, but it was masked by his BABIP and left-on-base rate that killed his surface stats (4.20 ERA vs. 2.40 xFIP). This year, he actually outperformed his xFIP with a 2.66 ERA. After an early season MASH Report on Rodney’s velocity, I eyed Farquhar. At least keep him in mind next year if anything does happen to Rodney.

Josh Edgin (Mets for those of you that don’t know) has a top 65 contact-rate sandwiched between Mark Melancon and Jake McGee and even induced grounders 50% of the time. He has a pretty extensive repertoire as well. In order of usage: Fourseamer, Slider, Curve, Change, Cutter and Sinker. According to his Brooks Player Card, he has great swing and miss rates on his Curve (>56%), Cutter (50%), Slider (>42%) and Sinker (33%). Even his Change approaches 30%. This isn’t the case on his Fastball, but at 93+ MPH, it induces a decent amount of grounders (1.8 GB/FB). Keep in mind he had late-season elbow issues which effected his velocity by a MPH or so, but he could be called upon to get Mejia out of a jam. I like him better than an unhealthy Bobby Parnell and Jeurys Familia from a command perspective for another year.

Zach Duke did his best Craig Kimbrel impression prior to the R2M monster hitting him in August. Prior to 8/1, Duke had a 34.9% K-rate and 27.3 K-BB%. Kimbrel ended the year with a 38.9% K-rate and 28.3 K-BB%. I think August and September brought him back to his realistic value (~2.50 ERA, 1.15 WHIP). It will be interesting to see who closes for the Brewers if they let Francisco Rodriguez go. Both Duke and Will Smith have above average (even for RP w/ 10+ saves) swing-and-miss. Will Smith should have additional command next year, but Zack Duke induces grounders better which I like in my closers/in Milwaukee. They also have Jonathan Broxton. The hierarchy seemed to be K-rod-Broxton-Smith late last season. If that’s the case, they should use Duke more (former starter) and in higher leverage situations. He was equally solid against both lefties (.258 wOBA) and righties (.262 wOBA).

Oliver Perez everybody! I thought I could filter him out by his splits being a lefty, but like 2012, he was more effective vs. righties (and faced 44 more of them). The D-backs have Addison Reed, up-and-comer Evan Marshall as well as Daniel Hudson caught touching 97 MPH so if not by outcomes or splits, we can filter Perez out by opportunity.

Darren O’Day and Andrew Miller is part of one dominating Baltimore bullpen – one that gets referenced by anyone who thinks the Orioles can beat the Tigers in the ALDS. Notice that Zach Britton didn’t make either of the above lists! He was filtered out by his below average K-BB% (13.70%). It’s his 75+% grounder rate (hence the 81+% left-on-base rate and .215 BABIP) that keeps him elite in Baltimore. The only concern you can have with O’Day is a fastball velocity almost 2 standard deviations below the mean for relievers, but his arm angle combined with that slider still induces a 30+% whiff-rate on both pitches. Miller’s slider though is a world apart from O’Day’s: only Pedro Strop, Will Smith, Jake Diekman, Greg Holland and Oliver Perez induces more whiffs than Miller’s 55% according to Baseball Prospectus’ Pitchf/x Leaderboards.  I doubt we’ll see a closer-transition next year in Baltimore unless Britton’s GB/FB ratio takes a drastic dive because his HR/FB ratio, which approached 18%, could be an issue.

An xBABIP review

On the last day of the season, @jeffwzimmerman provided me with Pitch xBABIP based on inside edge data. Let’s look at some of the bigger xBABIP differentials to keep in mind:

The last column depicts the z-score for BABIP differential. Francisco Rodriguez was expected to have a BABIP about 120 points above his actual BABIP. I highlighted (red/bad; green/good) the xBABIP z-scores as well so that you know whether or not to actually be concerned meaning sure Aaron Sanchez has the 5th biggest BABIP differential (over 2 standard deviations from the mean), but a .239 xBABIP is still utterly elite (3.34 SD’s from the mean). On the other side of the equation, it’s nice to see Evan Marshall, Carlos Martinez and Adam Ottavino (albeit in Colorado) with large BABIP differentials. Marshall and Martinez even have xBABIP’s over .5SD from the mean.

The last bit of fun

It was a very fun year to be doing bullpen reports for RotoGraphs. Aroldis Chapman broke the single-season strikeout rate of 2012 Craig Kimbrel (50.2%). He struck out 52.5% of the hitters he faced. Andrew Miller (42.6%) and Brad Boxberger (42.1%) also made the top 10 seasons ever. Dellin Betances (39.6%), Wade Davis (39.1%) and Craig Kimbrel (38.9%) made the top 20. Chapman’s swinging-strike% of 20% beat ’12 Kimbrel by .8%, but he couldn’t pass ’04 Lidge, ’03 Gagne, ’04 Gagne, ’02 Gagne or ’05 Lidge. Chapman, Miller, Doolittle, Boxberger, Betances (Wade Davis and Kenley Jansen close behind) all had historical, top 20 K-BB rates. Relievers dominate this list: only ’99 Pedro Martinez (#12), ’00 Pedro Martinez (#21), ’01 Randy Johnson (#27) and ’01 Pedro Martinez (#28) make it into the top 30, but it’s clear that we have a growing list of elite relievers.

From a fantasy perspective, thanks to 45+ saves totals out of Holland and Kimbrel, we had two relievers ranked in the top 20 pitchers. If Chapman didn’t miss time and Betances and Davis consumed the closer role, we would have had 3 others. Last year, Craig Kimbrel and his 4 wins, 50 saves, 98 SO’s, 1.21 ERA and .88 WHIP campaign made him the 3rd most valuable pitcher. This year with Kershaw, Cueto, Felix and Kluber, it would have taken even more.

If we combined the 3 more dominating performances exclusive of saves this year: Aroldis Chapman’s K-rate (52.5%) and saves total (36), Dellin Betances IP (90) – who was dominating in his own right, Wade Davis’ ERA (1.00) and Wins total (9) and Sean Doolittle’s WHIP (.73) – let’s call this guy Aroldellin Dooldavis, we would wind up with a 10.95 z-sum…just above Corey Kluber (10.72), but under Clayton Kershaw (13.74), Johnny Cueto (12.95) and Felix Hernandez (12.50). Even 50 saves wouldn’t have done the trick (12.43 z-sum):

Name Age IP WHIP zWHIP ERA zERA W zW SO zSO SV zSV 5×5
Clayton Kershaw 26 198.1 0.86 4.23 1.77 3.53 21 3.38 239 2.95 0 -0.34 13.74
Johnny Cueto 28 243.2 0.96 3.91 2.25 3.22 20 3.16 242 3.01 0 -0.34 12.95
Felix Hernandez 28 236 0.92 4.29 2.14 3.37 15 2.06 248 3.12 0 -0.34 12.50
Aroldellin DoolDavis 25 90 0.73 2.50 1 2.25 9 0.74 177 1.77 50 5.17 12.43
Corey Kluber 28 235.2 1.09 2.14 2.44 2.69 18 2.72 269 3.52 0 -0.34 10.73
Adam Wainwright 32 227 1.03 2.79 2.38 2.72 20 3.16 179 1.80 0 -0.34 10.13
Jon Lester 30 219.2 1.1 1.88 2.46 2.46 16 2.28 220 2.59 0 -0.34 8.86
David Price 28 248.1 1.08 2.40 3.26 0.89 15 2.06 271 3.56 0 -0.34 8.56
Chris Sale 25 174 0.97 2.68 2.17 2.43 12 1.40 208 2.36 0 -0.34 8.52
Madison Bumgarner 24 217.1 1.09 1.97 2.98 1.35 18 2.72 219 2.57 0 -0.34 8.27
Zack Greinke 30 202.1 1.15 1.18 2.71 1.78 17 2.50 207 2.34 0 -0.34 7.46
Max Scherzer 29 220.1 1.18 0.94 3.19 0.93 18 2.72 252 3.20 0 -0.34 7.45
Jordan Zimmermann 28 199.2 1.07 2.02 2.66 1.85 14 1.84 182 1.86 0 -0.34 7.22
Julio Teheran 23 221 1.08 2.13 2.89 1.57 14 1.84 186 1.94 0 -0.34 7.13
Stephen Strasburg 25 215 1.12 1.61 3.14 1.01 14 1.84 242 3.01 0 -0.34 7.12
Garrett Richards 26 168.2 1.04 1.96 2.61 1.64 13 1.62 164 1.52 0 -0.34 6.39
Greg Holland 28 62.1 0.91 1.11 1.44 1.28 1 -1.02 90 0.10 46 4.73 6.21
Craig Kimbrel 26 61.2 0.91 1.09 1.61 1.16 0 -1.24 95 0.20 47 4.84 6.06

 


RotoGraphs Audio: The Sleeper and The Bust 01/23/14

Episode 89

The latest episode of The Sleeper and the Bust is now live! Jason Collette joins Eno Sarris to preview the Arizona Diamondbacks and the Los Angeles Dodgers.  Skype was being a bit wonky today so apologies in advance for any audio issues during the podcast.

As usual, don’t hesitate to tweet us any fantasy questions you have that we may answer on our next episode.

You can subscribe to the podcast on iTunes or via the feed.

Thanks to Ian Miller aka Teen Archer, for the new intro music

Approximately 61 min of joyous analysis.

FSTA draft results mentioned several times in the show

01:01:43

Roto Riteup: May 1st, 2012

• After sucking the life out of Detroit’s lineup for the past couple of years, Brandon Inge has somehow managed to find a starting job in Oakland after passing through waivers. If you pick Inge up in any league, you probably aren’t someone who reads RotoGraphs.

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Will Success Spoil Dan Haren?

Some thought the A’s were selling high when they traded Dan Haren to the Diamondbacks following the 2007 season. He was coming off a season in which he set career bests in wins (15), ERA (3.07) and strikeouts (192). However, Haren had a FIP 63 points higher than his actual ERA and in the second half of 2007 he fell from a 2.30 ERA to a 4.15 mark. Additionally, many felt Haren was the beneficiary of both his home park and the A’s strong defense.

But Haren went out and pitched even better in 2008. He set career bests in wins (16), strikeouts (206) and WHIP (1.130) while his ERA (3.33) was the second-best mark of his career. Many now consider Haren one of the best starters in the game and he ranks in the top 10 in most lists of starting pitchers. His latest ADP is 55 according to Mock Draft Central.

Despite Chase Field being a good hitter’s park, Haren pitched just as good last year at home as on the road. He is young, durable and has a fine assortment of pitches. Last year Haren threw more cutters, giving batters another weapon to fear.

The projection systems agree with popular opinion, as they show Haren in the top 10 among starting pitchers in all four fantasy categories. Haren looks to be one of the safest pitchers around, as there are neither injury concerns nor any unprecedented inning totals warnings surrounding him. Also adding to his attractiveness as a fantasy player is the expected comfort from a new contract and additional familiarity with his surroundings in the National League.

If anything, fantasy owners may be undervaluing Haren relative to his starting pitcher peers in current mock drafts.