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I first interviewed Clay Buchholz in June 2005. Newly drafted — 42nd overall by the Red Sox — he’d made his professional debut a few days earlier. His future was bright.

A lot has happened since then. Buchholz has had a roller-coaster career in Boston, with the highest of highs and the lowest of lows. He’s thrown a no-hitter, won a World Series ring, and made a pair of All-Star teams. He’s also had train-wreck seasons. Injury prone and maddeningly inconsistent, he’s become a lightning rod for the Fenway Faithful.

Earlier this year, his days in Boston looked numbered. Relegated to the bullpen, he was 3-9 with an ERA north of 6.00 as the July trade deadline approached. By all accounts, he was as good as gone — assuming a rival team made a decent offer. It didn’t happen.

Buchholz is still wearing a Red Sox uniform. He’s also back in the starting rotation and showing signs of a revival. The 32-year-old right-hander has pitched well in two of his last three outings, and his ERA is down to 5.20. His future remains cloudy, but for now, he’s taking the ball every five days in a pennant race.

Buchholz talked about his past — and where he is today — prior to his last start.

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Buchholz on how he’s changed since 2005: “I think it’s probably moved in three- or four-year intervals. Obviously, the older you get — the more innings and pitches that you throw — your stuff goes down a tick. The velocity on my fastball has gone down three or four mph. That’s happened gradually. When I go out there now, I’m anywhere from 91 to 94. When I came out of junior college, I would start the game 88-90. Third inning I’d be 92-94. Fifth inning on I’d be 97.

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Watch J.A. Happ pitch, and you know he has to have a secret. The Blue Jays lefty throws a fastball with average velocity nearly three-quarters of the time, pitches in a tough home park, and somehow is a win away from 20 with an ERA better than three-quarters of baseball.

He must have a secret. And it’s not that he has a riding fastball: we’re getting more comfortable with that one and he’s a known rise-baller. Nor is it a secret with which Ray Searage blessed him. “I was pitching pretty good for two-and-a-half months in Seattle,” he responds at the prospect being counted as a Searage Surprise. “I wasn’t struggling to get outs.”

It isn’t a sexy secret, and of course it wouldn’t be. Happ’s never lit up the radar gun or dazzled anyone with his darting, diving stuff. And it’s not even his first secret regarding his stuff; he might have three secrets about the fastball. But it’s his newest one, and it’s been a big driver for his success this year.

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Over the last calendar year, Andrew Miller has a 1.81 ERA and a 2.22 FIP. Those dominant numbers, combined with the compelling nature of Miller’s complete transformation, have rightfully earned him the reputation as perhaps baseball’s best active relief pitcher.

Over the last calendar year, Addison Reed has a 1.87 ERA and a 2.14 FIP. You might not have heard about it, but dating back 365 days, Reed’s been every bit as dominant as the guy who’s rightfully earned the reputation as perhaps baseball’s best active relief pitcher. And you might not have realized it, but Reed’s undergone a similarly compelling transformation that’s left him looking more and more like Miller than one might expect.

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It’s been over a year now since Sean Dolinar and I published our article(s) on reliability and uncertainty in baseball stats. When we wrote that, we had the intention of running reliability numbers for even more statistics, including pitching statistics, of which we had included none.

That didn’t happen. So a little while ago, when I was practicing honing my Python skills by rewriting our code in, well, Python (it was originally in R), I figured, “Hey, why not go back and do this for a bunch more stats?” That did happen. Sean was/is swamped making the site infinitely better, though, so I was on my own rewriting the code.

In case you need a refresher, never read our original article, and/or don’t want to now, here’s a quick description of reliability and uncertainty: reliability is a coefficient between 0 and 1 that gives a sense of the consistency of a statistic. A higher reliability means that there’s less uncertainty in the measurement. Reliability will go up with a larger sample size, so the reliability for strikeout rate after 100 plate appearances is going to be much lower than the reliability for strikeout rate at 600. Reliability also changes depending on which stat is being measured. Since strikeout rate is obviously a more talent-based stat than hit-by-pitch rate (well, maybe not for everybody), the reliability is going to be higher for strikeouts given two identical samples. You can think of it like strikeouts “stabilize” quicker than hit-by-pitches.

Reliability can be used to regress a player’s stats to the mean and then to create error bars around that, giving a confidence interval of the player’s true talent. To continue with the strikeout example, I’ll add another point — namely that, the more plate appearances a player has recorded, the closer the estimate of his true talent will be to the strikeout rate he’s running at the time. In fact, strikeout rate is so reliable that, after a full season’s worth of plate appearances, a player’s strikeout rate will probably be almost exactly reflective of his true talent. The same cannot be said for many other stats, like line drive rate, which is mostly random; the reliability for LD% never gets very high, even after a full season’s worth of batted balls.

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Rob Refsnyder has gone deep just 37 times since the Yankees drafted him out of the University of Arizona in 2012. He’s homered twice this year in 397 plate appearances between Triple-A and the big leagues. Power hasn’t been a forte.

He wants that to change.

“I’m going to try to hit home runs next year,” Refsnyder told me on Friday. “I’ve had a lot of good conversations with people and I’m going to try to completely change my game. I think it will help my career.”

The change may be necessary. Refsnyder has good bat-to-ball skills, but he’s neither a speed-burner nor a plus defender. He came up through the Yankees system as a second baseman, but with Starlin Castro manning that position, he’s been seeing action at first base and in right field. Without added pop, he’s unlikely to be an everyday player going forward.

He has role models for his goal. Read the rest of this entry »

Yesterday, following a league investigation into claims that the Padres withheld pertinent medical information from other teams with whom they were discussing trades, MLB suspended Padres GM A.J. Preller for 30 days. The Padres admit that they screwed up and vow to change their “medical administration and record keeping,” but in their statement about the suspension, claim to have done so unintentionally.

Obviously, as outsiders without knowledge of what the league found in their investigation, we can’t make any definitive claims about what is true and what isn’t, but the idea that the Padres accidentally kept two sets of medical records — one for their internal use and one to be fed into the centralized league database — is absurd. You don’t unintentionally create more work for your medical staff without knowing exactly why you’re doing so, and it’s not like everyone in the Padres organization hasn’t previously worked with other organizations; they all knew the standard protocol for reporting health information in trade discussions, and they knew this wasn’t how everyone else does things. The idea that this was an accident, and that no one in the organization realized what the team was doing, is laughably unbelievable absent a compelling explanation, which the Padres did not provide.

As best as we can tell, the Padres lied (by omitting pertinent information) to other teams about the health of their players in order to try and complete trades and secure returns that they might not be able to otherwise if the full scale of medical information was disclosed. And it worked. They made the Andrew Cashner deal with the Marlins by also including Colin Rea, a young starter the Marlins thought they were getting to bolster their rotation; when it turned out that Rea got to Miami and admitted that his elbow hurt and had been hurting for some time, the Marlins went nuts and the Padres had to agree to rework the deal, taking Rea back and sending one of the prospects they got in the deal back to Miami.

Unlike the Rodney/Rea deal, the Red Sox didn’t force the Padres to rework the Drew Pomeranz/Anderson Espinoza swap, but it is fair to wonder if they would have surrendered their top pitching prospect had they known that Pomeranz had been taking anti-inflammatory medications at the time of the deal. We’ll never know, of course, but it’s at least reasonable to think that the Padres believed there was some benefit to their trade discussions by withholding that information from the Red Sox, or else they wouldn’t have bothered to omit that information in the first place.

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With three home runs in his past five games, Freddy Galvis is in the midst of a power surge that has made him the most prolific home-run-hitting shortstop in the league over the past 30 days. Go back just a tiny bit further and you’ll find that Galvis has 10 home runs and a corresponding .899 OPS since August 9th. Freddy Galvis. You know, the glove-first shortstop with a career 73wRC+. He entered the 2016 season with 20 career home runs in 1,153 plate appearances and has now nearly doubled that career total thanks to 19 homers this year in just 568 trips to the plate. It’s a mind-boggling surge on its own, but Galvis’ story is just one of many strikingly similar tales.

Across the league, there are established major-league shortstops with unimpressive career power totals soaring beyond their prior home-run paces.

These newfound sluggers have all joined a plethora of other shortstops across the league in the 15-plus home-run club. All total there have been 15 shortstops to hit 15 or more homers this season.

According to Baseball-Reference, prior to this year there had never been more than 10 shortstops to hit 10 or more homers in a season — a record set in 2003 and tied in 2007. (As an aside, the only shortstops to make the list in both of those seasons were Miguel Tejada and Alex Gonzalez… not that Alex Gonzalez, the other one.) This year’s crop of 15-plus-homer shortstops is already half again as large as the previous record holder and it’s conceivable that the size of this year’s group could further extend its new record as Francisco Lindor is currently just one homer away at 14 on the season and Brandon Crawford, with a slightly larger mountain to climb, currently has 12 round-trippers on the year. In summary, shortstops be hittin’ lotsa long balls this year.

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Introduction
The Fringe Five is a weekly regular-season exercise (introduced a few years ago) conducted by the author with a view to identifying and monitoring the most compelling of those rookie-eligible minor leaguers who both (a) received a future value grade of 45 or less from Dan Farnsworth during the course of his organizational lists and also (b) was omitted from the preseason prospect lists produced by Baseball America, Baseball Prospectus, MLB.com’s Jonathan Mayo, and John Sickels — and their attendant midseason lists, as well. Every week during the minor-league season, the author submitted the names of five “compelling” minor leaguers, each name attended by a brief summary of that prospect’s most relevant credentials.

Generally speaking, compelling in this context meant that the prospect in question possessed some combination of the following:

1. Promising statistical indicators; and

2. The ability to play on the more challenging end of the defensive spectrum; and

3. Youth relative to minor-league level; and

4. A curious biographical or statistical profile.

With minor-league regular seasons having all been completed, the author presents here a summary and discussion of the Fringe Five for 2016.

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A few weeks ago, I approached Tampa Bay (and former San Francisco) infielder Matt Duffy in the visiting clubhouse at Fenway Park. I wanted to talk to him about the mental side of the game. He was getting dressed, so we agreed to meet in the dugout in five minutes. At that very moment, Brian Kenny began talking about the idea of clutch on MLB Network, which was showing on the TV a few steps from where were standing.

Duffy kept his eyes and ears on the MLB Network discussion as he pulled on his uniform and cleats. With that in mind, I began our subsequent conversation with that very subject. From there, we segued into his mindset as a hitter, which is heavily influenced by Harvey Dorfman’s The Mental Keys of Hitting.

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Duffy on clutch hitting and heart rate: “I think there is something to [the idea of clutch]. When you look at the RBI leaders every year — the guys who do well with runners in scoring position — for the most part it’s the same guys. To me, that’s not an accident. I think a lot of people think RBIs are purely a result of the opportunities you have. That does play into it, but I also think that, in certain situations, if I can keep my heart rate at a more efficient level than the pitcher does, more times than not I’ll succeed. I don’t want my heart rate to be so low to where I’m not awake, but I also don’t want it to be so high that I’m jumping at everything in the box.

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We’ve all seen those swings so terrible that a batter can’t help but smile. Swings like this one from Brandon Phillips last year.

Phillips, of course, isn’t the only victim of this sort of thing. He’s been a league-average major-league hitter for a decade, which is a substantial accomplishment. But even accomplished hitters can look bad, can get it very wrong.

Were Phillips batting not for a last-place club but one contending for the postseason, we might gnash our teeth. Couldn’t he see that was a slider? What was he thinking? What was he looking at?

The answer to that last question, turns out, is way more complicated than it seems. Phillips clearly should have laid off a breaking ball that failed to reach the plate. He clearly has done that — otherwise, he wouldn’t have had a major-league career. So what happened? What did he see? Or not see? Ask hitters and experts that question, and the answers are vague, conflicting, and sometimes just strange.

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