Just as I was beginning to work this up, I got an email saying Nelson Cruz had been named the American League Player of the Week, which provides for a very convenient introductory sentence. Over the past seven days, Cruz has posted the highest wRC+ in baseball, by 85 points. Over the past seven days, Cruz has driven in 10 runs, while the Indians have driven in 11. Eight days ago, Cruz slugged a home run. Nine days ago, Cruz slugged a home run, and a couple of singles. All he’s hit have been singles and dingers, and he has almost as many dingers as singles. It’s been a good start for Nelson Cruz.

Which means analysis is obligatory. What’s gotten into Nelson Cruz? The answer is pretty much always “nothing sustainable,” but that’s never stopped us before. Nor does that mean there’s nothing to analyze. Cruz has been almost the entirety of the Mariners’ offense, and lately he’s been hotter than everyone else. Yet, how true is that? And is there anything else going on?

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Let’s follow a tried-and-true format, unimaginative as it is. I’ll throw in a twist. There’s the imaginative part.

The good! Archie Bradley, so far, has made two starts in the major leagues. He’s faced maybe the best team in baseball, and last year’s World Series champion. He’s allowed a total of five hits and two runs, leaving his first start with his team ahead of Clayton Kershaw, and leaving his second start with his team ahead of Madison Bumgarner. His team also isn’t very good, so there are some bonus points.

The bad! Bradley’s come up just a hair shy of 60% strikes. He’s paired 10 strikeouts with six walks, so the command issues that’ve always been there haven’t disappeared. To this point, he’s lived almost exclusively fastball-curveball.

The ugly interesting! Bradley’s basically tied for the league lead in groundball rate. Of the 31 pitches batters have hit somewhere fair, they’ve put 23 of them on the ground. He hasn’t faced extreme groundball-hitting opponents, and he doesn’t have a ground-balling track record, and this is one of those things that’s supposed to sort itself out in a hurry. Groundball pitchers generally get grounders every time out. Fly ball pitchers generally put the ball in the air every time out. There are exceptions, odd reversals, but the probability gets lower when you consider back-to-back starts. Already, we might start to think of Archie Bradley as a groundball pitcher. With the weird thing being, he hasn’t been one, and he probably shouldn’t be one.

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Imagine, if you can, the least-fair thing in baseball. Do you have it? Maybe you’re picturing having to face Giancarlo Stanton with the bases loaded. Maybe you’re picturing one of those Clayton Kershaw curveballs, or Juan Lagares running down a would-be winning double in the gap. Maybe you’re just thinking about Billy Hamilton on the bases. OK! You’re wrong.

The least-fair thing in baseball is Aroldis Chapman throwing a changeup. It’s the least-fair thing for exactly the reasons you’d expect. His fastball is unfair enough on its own; add a changeup and you’ll have helpless hitters twisting their spines. The good news was this: for years, Chapman’s changeup was only theoretical. It was something he’d throw a few times in spring training before realizing he didn’t need to mess around. Chapman was never quite lacking for weapons.

Then in 2014, Chapman got experimental. For the first time, he carried that changeup into the season. And the results? You could probably guess the results, even without me telling you, but just for the sake of being complete: Chapman threw 63 changeups, according to Brooks Baseball. Opposing hitters made contact exactly once (it was an out). Allow me to repeat that, for effect: batters made contact with one Aroldis Chapman changeup in 2014, out of 63 opportunities. They didn’t always swing, but you get the point.

It was beautiful. It was perfect, from an objective-observer viewpoint. It was decidedly not perfect from an unobjective-opposing-hitter viewpoint. Through the first half of the season, Chapman threw 11% changeups. In a June series against the Pirates, Chapman threw six changeups in consecutive games. All of a sudden, it looked like the change was going to be a regular part of the repertoire, and Chapman was soaring to new levels. Chapman, at that point, was playing with his food.

Read the rest at Just A Bit Outside.

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With certain players, you just don’t get the usual questions. Lorenzo Cain is one of them. By our numbers, last year, Cain was just about a five-win center fielder. In large part, this was powered by a Defense rating close to +20. UZR and DRS both absolutely loved him, and frequently that magnitude of statistical affection makes some people uncomfortable, but there wasn’t much questioning Cain’s ability, especially come playoff time. He’s obviously an elite defensive center fielder. Last year, he was an above-average hitter and runner. Put it together and you have a great player. It’s pretty easy to explain Cain’s five wins above replacement.

So coming into this year, Cain looked terrific. He stood to be a weapon for the Royals, if somewhat incomplete. Few can match him in the field. Only a few more could match him on the bases. And Cain has learned to hold his own at the plate, after some struggles earlier in his career. Yet Cain still had some room for offensive development. He was far from a finished product, and through a couple weeks now, there’s a sign that, perhaps, Cain is about to lift that part of his game. Let’s take a look at his Thursday.

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You’ve probably seen what Kevin Pillar did on Wednesday. On the off chance you haven’t, we’ll get to that later, at the right time. Let this much be said now: it was absolutely extraordinary. But it also wasn’t the first Pillar highlight of the season. The guy who was supposed to lose time to Michael Saunders has so far played in place of Michael Saunders, and, it’s been a busy several days.

One play alone can’t explain this: in the early going — the very-stupid-early going — Pillar leads baseball in Defensive Runs Saved, with seven. As a matter of fact, if you set a low threshold of 500 innings, then, since 2010, Pillar ranks third among major-league outfielders in DRS per inning, or per 1,000 innings, or per whatever denominator you choose. He hasn’t played enough for that to be super meaningful, but he’s done enough for that to be interesting, and it isn’t lost on me that a pillar is a stationary building support. Grant Balfour has been a pretty good pitcher. Kevin Pillar has been a pretty good defender.

So let’s review Pillar’s week that was. Everything you see below was contained within Pillar’s most recent seven games, through Wednesday, with the first game chosen because that’s when Pillar recorded his first assist. I noted that Pillar has been busy. Ever wondered what 7 DRS looks like? Wednesday’s catch was just the latest feat. And there have been close calls. And there have been misplays. The antonym of “pillar” is “Kevin Pillar”, apparently, because he hasn’t been able to stop moving around. The man’s made himself noticed.

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There’s a lot going on with Kevin Gausman right now. He’s throwing a curveball, instead of a slider. I learned that from another baseball writer earlier today in my email. He’s working out of the bullpen, instead of the rotation. I learned that from general news, and from all the people who complain in our weekly chats. And, all of a sudden, he’s throwing high fastballs. I learned that accidentally through research of other stuff. This is of particular interest to me.

In January, I asked a simple question: should Kevin Gausman and James Paxton throw more high fastballs? The thinking was this: the Rays have been prioritizing high fastballs. An effective high fastball has a particular movement, with lots of rise as observed on PITCHf/x. Gausman and Paxton throw fastballs that qualify, but they also threw the bulk of those fastballs low. What if they didn’t do that? Could more strikeouts and success follow? I didn’t know, but I thought it at least worth wondering.

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During the FanGraphs trip to Arizona in February, Carson remarked that I was squeezing an awful lot of juice out of the pitch-comp fruit. It’s true, I was — it was an idea I found interesting, and, more importantly, I didn’t have much else to write about. But now we’ve got a baseball season, a whole brand-new one, which means I get to resume writing about the thing I find perhaps the very most interesting: pitching to Mike Trout. I’ve probably written about this 10 times. I’ll probably write about it another 100 times. Many of you are probably sick of it. I might never grow sick of it.

Scouting reports make the rounds. At first, information is private, exchanged only within the industry. At some point, something gets leaked, or identified by an analyst. Then a report will make the rounds within analytical circles. Analysts write, so reports will be exposed to analytically-minded fans. But things can keep going, if sufficiently remarkable. Sometimes you’ll have a scouting report that makes its way into general baseball knowledge, even among people who don’t think in such granular terms. The Mike Trout scouting report is out there. I don’t even need to tell you anything about it because you’ve been hearing about it for months. Everybody knows. A few days ago I was listening to Mariners radio announcer Rick Rizzs, and he was talking about the importance of pitching Trout hard and in and up. It might be the only thing he has in his brain from within the past 12 years.

So it’s 2015 now. How is Mike Trout being pitched, given, you know, everything?

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You had, probably, heard of Arquimedes Caminero before. This is because his full name is Arquimedes Euclides Caminero, and that speaks for itself. His existence as a baseballer was something of a curiosity, but that was more or less the extent of it. However much you knew about Caminero, you probably knew next to nothing about his actual talent. In January, he was designated for assignment by the Marlins. Some days later, he was acquired by the Pirates for cash considerations. He was added to the spring-training pile of guys competing for a major-league bullpen spot. These are the transactions you ignore, and you’re usually justified in doing so. Most of the time, the Camineros of the world remain the Camineros, only a little bit older every year.

And to be fair, it’s April 14. It’s been two and a half months since the Marlins gave Caminero up, so it’s not like we can know the rest of his career. But, in February, I polled the audience about pitching coaches, and Pirates fans liked theirs the most. Big fans of Ray Searage, those Pirates people. Searage has developed a reputation for getting the most out of troubled live arms, and based on early indications, with Caminero, Searage can count for himself another unlikely win.

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Yesterday, against the Pirates, Anthony Gose finished 0-for-3 with two strikeouts. He has, so far, struck out nine times in 23 plate appearances. Let’s talk about why he’s possibly better.

Through his first three opportunities in the bigs, Gose came to the plate more than 600 times, and he managed a .285 wOBA. That’s a bad wOBA — the sort of wOBA acceptable only from a pinch-runner or defensive specialist. For 2015, our own projections peg him for a .292 wOBA, which is technically better, but ranked with Shane Robinson and Aaron Hicks. It’s a perfectly sensible projection; it matches what Gose has done, allowing for a little improvement from the 24-year-old. But there’s something projections can’t account for as they analyze the history: what if a hitter changes his swing?

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