On July 20th, my colleague Craig Edwards wrote a piece for this site entitled “The Cubs Are on Pace for Their Worst Rotation Ever” in which he argued — in accordance with all observable objective reality at the time — that the Cubs were on pace for their worst rotation ever. It wasn’t an especially difficult case to make. At the time Craig published, the Cubs’ rotation — which still featured rather too much of Tyler Chatwood — had produced just 3.0 WAR as a group, which is the kind of figure that, as a measure of collective performance through nearly three months of a major-league season, is apt to make one physically recoil regardless of how you feel about pitcher WAR’s usefulness as a measure of overall performance. It was bad.

Since then, however, the Cubs’ rotation has been rather good, and that fact is the point of this article. Consider the following table, which presents the Cubs’ rotational performance up to and including the 20th of July, and also after that date (MLB ranks in parentheses):

You will agree, I hope, that the Cubs’ rotation has been better since Craig said they were bad, and will therefore turn your attention with me to why. Here is one reason: it has much less Tyler Chatwood in it. Here is another: it has much more Cole Hamels. These might sound like blithe (and, in Chatwood’s case, rather mean) things to say, and to some extent they are. But they are also true.

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Yasiel Puig can still provide a spark or two of electricity when needed. In fact, the 27-year-old right fielder put forth quite a jolt this past weekend, doing some of the best work of his career in two of the Dodgers’ biggest wins this season. On Friday night in St. Louis, he punctuated a taut pitchers’ duel between Walker Buehler and Jack Flaherty with a pair of solo homers that bookended the scoring in a 3-0 victory. On Saturday afternoon, he hit three more jacks, two of them of the three-run variety, in a 17-4 rout. The wins allowed the Dodgers to catch and overtake both the Cardinals in the NL Wild Card race and the Rockies in the NL West race, and while Sunday’s loss to St. Louis undid both, Puig and company beat the Rockies on Monday night to retake the division lead.

You like dingers? Of course you do. Here’s the supercut of Puig’s five, which came at the expense of Flaherty, Tyler Webb (no, not that guy), John Gant, Mike Mayers and Luke Weaver:

It remains to be seen how the Dodgers’ season ends up, but as Puig goes, the 2018 campaign has been a fairly calm one, largely devoid of the drama of years past. Fewer complaints about his overly aggressive baserunning or lack of interest in the cut-off man. No reports of tardiness. No teammates ripping him anonymously through the media. No benchings or trips to the minors. He did get suspended for two games last month for brawling with the Giants’ Nick Hundley — an episode which brought forth the usual performative pomposity from the pastime’s moral guardians — but that has been the exception this season, not the rule.

He’s still demonstrative, of course, showing off his tongue now and then, licking his bat, admiring his homers when he hits them, and even kissing hitting coach Turner Ward afterwards. The epic bat flips, and the controversies attached to them — to his, specifically, not to the inane culture war that surrounds bat flips in general — appear to be a thing of the past.

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Pitchers learn and develop different pitches, and they do so at varying stages of their lives. It might be a curveball in high school, a cutter in college, or a changeup in A-ball. Sometimes the addition or refinement is a natural progression — graduating from Pitching 101 to advanced course work — and often it’s a matter of necessity. In order to get hitters out as the quality of competition improves, a pitcher needs to optimize his repertoire.

In this installment of the series, we’ll hear from three pitchers — Jerry Blevins, Taylor Guerrieri, and Lance McCullers Jr. — on how they learned and/or developed their curveballs.

———

Jerry Blevins, Mets

“The story starts as a kid. You start learning about curveballs, and the reason mine is big and slow is because I wanted to visualize it. A lot of those smaller breaking balls you don’t really see from the perspective of a pitcher. I wanted to see the big break. That’s why mine is how it is.

“Did anyone ever try to change that? All the time. Every step of the way, coming through the minor leagues. Even in high school and little league. They were always telling me, ‘Look, you need something tighter.’ I always fought against that, and I think it’s done me well.

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With the Texas Rangers, we get to the first team that’s actually rebuilding rather than Rebuilding™. While the prospect of contending at the same time didn’t exactly come to fruition — Texas is the sixth team in this series, after all — the Rangers are making a legitimate go at threading the needle between competing in the present and preparing for the future.

The Setup

Because they’re both based in Texas, it’s natural to think of the Rangers’ attempts to become relevant again in the context of the Astros’ own efforts. The two cases might not be precisely analogous, however: while Houston absolutely needed to take their own house down to the studs, Texas may be able to escape without going to such extremes. The Rangers had much higher payrolls baked into the cake in 2017 than Houston ever did, with little real hope of shedding most of those high-end costs. Texas has also never let the farm system sink to the levels of voiditude of those late Ed Wade Astros teams or recent rebuilders like the Orioles or Marlins.

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Ben Lindbergh and Jeff Sullivan banter about Willians Astudillo and Jacob deGrom (as usual), the perception of the Cubs vs. the reality of the Cubs, the dramatic, puzzling increase in infield shifting against Mike Trout, the checkered career of honest but pugnacious umpiring legend Tim Hurst, the future of two-way players, Joel Sherman’s column about new stats driving fans away from baseball, and the end of the American League’s interleague winning streak.

Audio intro: Sloan, "Same Old Flame"
Audio outro: Neil Young & Crazy Horse, "The Losing End (When You’re On)"

Link to Craig Wright’s newsletter
Link to Joel Sherman’s column
Link to Joe Posnanski’s response post
Link to Jeff Fletcher on the Angels’ two-way players

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Hi everyone! Welcome to the second live chat of the FanGraphs Book Club! We’ll get started at 9 pm ET, and Jonah will join us at 9:30. That’ll give us all 30 minutes to talk about the book amongst ourselves, and line up some really great questions for him. So, I would say, don’t put questions in for Jonah now, let’s save those until he logs on to the chat.

I hope you all are as excited as I am to talk baseball books! As a reminder, if you want to join our Facebook Group you can do so here.

Chat transcript:

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During their Friday night game in Milwaukee, the Pirates wouldn’t have expected Orlando Arcia to be such a nuisance. Out of every batter this season with at least 250 plate appearances, Arcia ranks third from the bottom in wRC+. Taking a deeper look at expected wOBA, based on Statcast-tracked batted balls, Arcia ranks dead last. Furthermore, and more importantly, Arcia wasn’t even in the starting lineup. The Brewers had Jonathan Schoop at shortstop. Arcia only entered during a top-of-the-fifth double-switch.

But by the time the evening was over, Arcia had finished 3-for-3 at the plate. The first time he came up, facing Chris Archer, he tried his damnedest to injure Archer and knock him out of the game.

And then, the second time he came up, facing Steven Brault, he drove in a couple of runners. It’s not uncommon for two runs to score on a double. It is uncommon for said double to come on a bunt.

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UMP: The Untitled McDongenhagen Project, Episode 2
This is the second episode of a weekly program co-hosted by Eric Longenhagen and Kiley McDaniel about player evaluation in all its forms. The new show, which is available through the normal FanGraphs Audio feed, has a working name now, but barely. The show is all prospect stuff, but there is plenty of that, as the hosts are Prospect Men. Below are some timestamps to make listening and navigation easier.

0:15 – Uncomfortable Paul McCartney discussion, feat. questionable impressions
1:12 – Update on the guys not from Liverpool
2:38 – Deciding on the name of the podcast
4:00 – New recurring segment: TV Talking Head Auditions
6:00 – Eric’s Take
8:40 – Kiley’s Take
10:30 – Satire is over, as PTI possibly should be
11:45 – TOPIC ONE: Updates to THE BOARD
13:12 – Vidal Brujan (2B, TB, Hi-A) and Brayan Rocchio (SS, CLE, RK), briefly Kristian Robinson (RF, ARI, RK)
19:38 – Luis Patino (RHP, SD, Lo-A), briefly Carlos Vargas (RHP, CLE, RK)
23:15 – Bryse Wilson (RHP, ATL, MLB),
24:11 – Bubba Thompson (CF, TEX, Lo-A)
24:43 – Nolan Jones (3B, CLE, Lo-A)
26:50 – Michael Kopech (RHP, CHW, MLB)
27:21 – Wenceel Perez (SS, DET, Lo-A), Carlos Vargas (RHP, CLE, RK), Cole Roederer (CF, CHC, RK), Josiah Gray (RHP, CIN, RK)
30:22 – TOPIC TWO: Front office scouting staff intrigue
31:03 – How cavemen invented scouting
33:00 – How different team philosophically approach their pro scouting department
34:03 – Something that should really surprise you
39:59 – Houston is the leading example of restructuring a staff
41:38 – Where Houston could get outflanked
43:48 – Delving into makeup and how important it is
47:07 – Running down some staffing changes in the industry
50:15 – Pennsylvania impressions!
53:55 – Minnesota accents!
54:42 – TOPIC THREE: Acuna, Soto, Vlad and the next teenage sensation
58:00 – WHO YA GOT?
1:02:00 – Who are the next potential teenagers in the big leagues?
1:08:00 – Kiley’s first scouting experience with Wander Franco…when he was 14.
1:10:38 – the 2017 July 2 class is looking prettay prettay good so far
1:11:46 – Kiley discovers the limits of technology
1:12:15 – The guys discuss Jibarito (the Puerto Rican KFC Double Down) and discuss Kenan Thompson doing David Ortiz talking about mofongo

Don’t hesitate to direct pod-related correspondence to @kileymcd or @longenhagen on Twitter or at prospects@fangraphs.com.

You can subscribe to the podcast via iTunes or other feeder things.

Audio after the jump. (Approximately 1 hr 16 min play time.)

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Clayton Kershaw is nearing the end of another very good season. For the third straight year, the left-hander will fail to record 30 starts or 180 innings, but his 3.05 FIP and 2.51 ERA, his 25% strikeout rate and 4% walk rate make him one of the 10-15 best starters in the game by rate — and still a top-25 pitcher after accounting for volume. That’s not quite the 2011-15, Cy Young-level Kershaw who averaged more than 7.0 WAR per season, but it’s still good enough that he’ll likely opt out of his deal with the Dodgers in favor of entering free agency.

As to why Kershaw is now only “really good” instead of “Death Star-level dominant,” the easy culprits are age and health. He’s 30 years old now and has spent time on the disabled list due to back problems in each of the last three seasons. Perhaps directly related to those issues has been the loss of velocity on the lefty’s fastball. The graph below shows average velocity by season and includes his slider for reference.

For a decade, Kershaw sat at roughly 94 mph with his fastball. Last year, he averaged 93. This season, that figure is closer to 91. In the meantime, Kershaw has slowly modified his slider to increase its velocity into the 87- to 88-mph range we see today. (If you want to read more about the evolution of that pitch, re-visit Jeff Sullivan’s post on the matter from back in 2014.) The point here is that the slider, while perhaps experiencing a bit of a dip relative to last year, has exhibited pretty much the same velocity this season as the past few, while the fastball has slowed down significantly. The slider has been a pretty consistently very good pitch since 2014, with whiff rates in the mid-20% range and swings on half of pitches outside the zone. The whiff rate is down to 15% and swings outside the zone are closer to 40%, but the pitch is dropping a bit lower and inducing grounders on 66% of batted balls. Due to a high infield-fly rate, only 9.3% of batted balls are flies that leave the infield. The result for Kershaw on the slider has been a 47 wRC+ consistent with his career numbers.

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