Way back in May, I wrote a piece here on early-season park factors. Based on 26,650 balls-in-play struck through May 11, park factors were calculated based on granular exit speed/angle data. Yes, the sample was fairly small, but some interesting data was generated. One conclusion reached was that weather seemed to be playing a fairly significant role: the upper Midwest and Northeast corridor clubs with open-air stadiums endured cool, wet springs which had a clear run-suppressing effect.

The article wrapped up by indicating that we’d check back in a couple months to see what effect the higher temperatures of summer would have on those park effects. And here we are. This week and next, we’ll update these park factors through late August. Today, we’ll focus on fly-ball park factors, and next week we’ll take separate looks at AL and NL overall park factors.

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Oakland right-hander Jharel Cotton made his major-league debut on Wednesday. The results were positive: over 6.1 innings, Cotton conceded just a lone run on two hits — the product, that run, of a homer by the Angels’ C.J. Cron. The process, while entirely adequate, was also slightly less positive: over those 6.1 innings and against those same 22 batters, Cotton recorded just three strikeouts.

In a sense, this start was the opposite of the sort which have defined much of Cotton’s season in the Pacific Coast League this year. Despite producing the best strikeout- and walk-rate differential (K-BB%) among all 57 Triple-A qualifiers in 2016, Cotton also recorded a 4.31 ERA — which, it turns out, is only the 35th-best ERA at Triple-A and even pretty middling among just PCL starters, too. The home runs were a problem for Cotton. Sequencing was a problem for Cotton. Controlling the strike zone wasn’t.

Apart from the runs he allowed and the runs he might have been expected to allow — whatever the discrepancy there — Cotton exhibited one quality yesterday that he’s exhibited all of this season and all of last season and maybe always since he was just a small child. An excellent changeup, is what. Lead prospect analyst Eric Longenhagen, among others, has described it as a plus-plus pitch — and it’s the presence of that pitch that has largely been credited with allowing Cotton to experience such great success as a professional despite a rather diminutive frame.

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This week, we’re running a series of posts laying out the case for the most compelling candidates for the American League’s Most Valuable Player Award. These posts are designed to make an affirmative argument for their subject and are not intended to serve as comprehensive looks at every candidate on their own. The authors tasked with writing these posts may not even believe their subject actually deserves to win, but they were brave enough to make the case anyway. The goal of these posts is to lay out the potential reasons for voters to consider a variety of candidates and to allow the readers to decide which argument is most persuasive.

Other cases: Jose Altuve for AL MVP / Mookie Betts for AL MVP / Mike Trout for AL MVP / Manny Machado for AL MVP.

Josh Donaldson was the American League’s Most Valuable Player last season, edging out Mike Trout by receiving 23 of 30 first-place votes and earning 385 vote points, compared to Trout’s 304. Donaldson was the best player on a division-winning team and, by routinely delivering in key moments, led the league in Win Probability Added for his 93-win club.

Donaldson was great, and clutch, and a winner. And this year, he’s arguably gotten better. The wRC+ has gone up. He’s again been one of baseball’s most productive hitters in high-leverage situations. He remains one of the game’s top defensive third basemen. The reigning MVP has, in many ways, built on his award-winning season. But that’s not why he should win it again.

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Last night, the Nationals and Braves played an 11-inning game, and because it happened in September, 17 different pitchers were used between the two clubs. Ninety-nine batters, 17 pitchers: that’s a new pitcher every six batters, essentially. Yes, it went extra innings, and Stephen Strasburg had to leave the start with an injury, forcing the Nationals into an unplanned bullpen game, but 15 pitching changes is still just far too many for a Major League game. It’s a problem the league faces every September, when teams are able to carry everyone on their 40-man roster as active players if they so choose; the Nationals currently have 37 active players.

Of course, neither the individual teams nor the players are all that incentivized to change the system. Since the minor-league season ends around Labor Day, the roster expansion gives teams a chance to give their best prospects something to do in September, and gets them some valuable experience in the big leagues. Players like it, of course, because the promotion to the active roster comes with a big improvement in salary, and so guys who have been making minor-league wages are essentially rewarded with a significant end-of-season bonus. It’s hard to imagine either side is going to push hard to limit September roster sizes in the current CBA negotiations, as they both benefit from the current system, and the burden of longer, less enjoyable games are mostly carried by the fans, who don’t have a seat at the bargaining table.

But as the Braves and Nationals showed last night, there has to be a better way than this. Let’s run through a few options.

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In June, I talked to Jesse Winker following a 2-for-3 game that included a double and a walk. At the time, a big-league call-up seemed almost imminent. The top outfield prospect in the Cincinnati system was performing well for Triple-A Louisville, and with the Reds in rebuild mode, Great American Ballpark loomed right around the corner.

I wrote up the interview, then decided to hold it until the call-up came. Days later, Winker hurt his wrist and missed the next three-and-a-half weeks. Upon his return, he went 20-for-50 — albeit with limited power — while, 100 miles north, the big-league club continued to swim against the tide.

August came and went, and Winker went nowhere. As Reds fans scratched their heads, he remained in Louisville where he celebrated his 23rd birthday and finished the season with a .303/.397/.394 slash line. Winker went deep just three times in 448 plate appearances — he had 13 long balls last year in Double-A — and walked and struck out an equal number of times (59).

As of today, Winker is still awaiting his first big-league call-up. Three months after it was conducted, the interview won’t wait any longer. Here is what Winker had to say following the June game.

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Winker on his game against the Syracuse Chiefs: “I didn’t know too much about their starter [Paolo Espino]. We did have a scouting report, and I was talking to Hernan Iribarren about how he likes to attack left-handed hitters, but the game kind of dictates itself. With a certain amount of outs and a certain number of guys on base, pitchers are going to attack you a certain way.

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Devised originally in response to a challenge issued by sabermetric nobleman Rob Neyer, and expanded at the request of nobody, NERD scores represent an attempt to summarize in one number (and on a scale of 0-10) the likely aesthetic appeal or watchability, for the learned fan, of a player or team or game. Read more about the components of and formulae for NERD scores here.

Most Highly Rated Game
Houston at Cleveland | 12:10 ET
Paulino (MLB Debut) vs. Bauer (160.1 IP, 99 xFIP-)
In addition to whatever postseason implications this game possesses for either team — and it’s not without consequence for either club — it also offers the debut of giant David Paulino for Houston. The 6-foot-7 right-hander has both (a) produced excellent statistical indicators and (b) exhibited excellent arm speed as a professional. In 90.0 innings across multiple levels this year, Paulino jas recorded strikeout and walk rates of 29.4% and 5.3%, respectively — giving Paulino the fourth-best such strikeout- and walk-rate differential (behind Jose De Leon, Luke Weaver, and a Low-A prospect) among all minor-league starters who’d recorded at least 75 innings. As for the fastball, it sits around 94 mph according to most reports.

What Paulino hasn’t done is pitch much. After easing back from a Tommy John procedure last year, he missed time this year to a combination of team suspension and elbow discomfort. Do his breaking pitches feature adequate swing and miss? Will he throw even one changeup? This game will provide hot, hot data to the end of answering those questions.

Readers’ Preferred Broadcast: Cleveland Radio.

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Ben and Sam banter about Yasiel Puig’s clubhouse qualities, Giancarlo Stanton’s comeback, and Anthony Rizzo vs. Wily Peralta, then answer listener emails about Kershaw and Trout, the Hall of Fame, roster sizes, young cores and more.

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