The Dodgers, Marlins and Braves have pulled off a massive trade that sends Mat Latos and Alex Wood to the Dodgers, and a whole slew of other players (plus a draft pick) in other directions. The prospects involved include Jose Peraza, Kevin Guzman, Jeff Brigham, Victor Araujo and Zachary Bird. Here’s what the data say about these players. (Note: WAR figures denote WAR through age-28 season.)

Jose Peraza, Los Angeles Dodgers, 8.7 WAR

Jose Peraza is easily the most highly touted prospect who changed hands in this deal. The 21-year-old second baseman was playing in Triple-A this year, where he was hitting an admirable .294/.318/.379 with 26 steals. He put up much better numbers in the lower levels of the minors, however, including a .339/.364/.441 showing between High-A and Double-A last year.

Peraza’s offensive game is centered entirely around contact and speed. He’s struck out in just 8% of his trips to the plate this year, and has struck out less than 13% of the time in each of his five years in the minors. Peraza’s lack of strikeouts, along with his solid BABIPs, have enabled him to hit for high averages throughout his minor-league career.

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The headline isn’t the way the Marlins would put it. It’s not the only way to interpret Wednesday’s trade — it’s just one way to do so. The Dodgers, who’ve been in the market for rotation help, convinced the Marlins to sell them Mat Latos. The price for Los Angeles: accepting, along with Latos, Michael Morse. To soften that blow, the Marlins have thrown in a competitive-balance draft pick, to be made after the end of the first round. Now, technically, the Dodgers are sending the Marlins three minor-league pitchers. So it’s not a pure sale, and we don’t know who those players are, so maybe a conclusion shouldn’t be jumped to, but this one feels pretty safe. Those pitchers are presumably the equivalent of nothing. They won’t be as valuable as the player that draft pick turns into. The Marlins sold an asset at the deadline, and they’re the ones effectively losing the best prospect.

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Pitch names aren’t very imaginative. What is a fastball but a ball that’s thrown fast? The ball, in fact, thrown the fastest, relative to the curveball — which curves — or to the knuckleball — thrown as if off the knuckles. The changeup is also entirely explained by the name, although this one requires you know something about another pitch. The changeup is supposed to change things up, when a hitter is looking for a fastball. It’s supposed to represent a change of speed. Absent a fastball, a changeup is nothing but a slower fastball. The changeup needs to change something up to survive.

The game has seen a lot of pitchers. For the overwhelming majority of them, we’re sitting on pretty limited information. Surely, there have been some outliers over the years, pitchers who have done unusual things with their pitches. According to conventional wisdom, a good changeup needs to be about 8 mph to 10 mph slower than the fastball. Anything less than that, it’s thought, and there’s not enough of a change of speed. The best-known exception to this idea is Felix Hernandez, who’s been known to throw changeups in the low-90s. Felix’s changeup is one of the best in the game, so he’s served as evidence that there’s more than one way to throw a hitter off with a change. Henderson Alvarez specifically cited Felix as the reason he’s willing to throw his own changeup harder. It can be rewarding to push the limits.

Zack Greinke, too, is pushing the limits. Obviously, he’s pushing the limits of un-scored-upon-ness. But he’s also become a lot more like Felix than you might have realized.

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The last time Zack Greinke allowed a run in a game a game that counted the regular season was June 13, when Justin Upton hit an eighth-inning homer. Even that solo shot was subject to an instant-replay review, and before that, Greinke had allowed just one run in the first. But people care about what’s come after that. What’s come after that have been six starts, spanning an out shy of 44 innings. Over those innings, opponents have batted .129; over those innings, opponents have scored not any runs. The Dodgers actually found a way to lose one of those games, but this is a streak that forces you to focus on the individual. Generally speaking, the name on the front is more important than the name on the back. But we’re all allowed to forget that, when someone’s doing something incredible.

Greinke doesn’t own the longest scoreless streak ever. Nor will he soon, probably. The odds favor the opponents being able to do at least something, and all it ever takes is one swing, on even a pretty good pitch. But we can’t declare the streak over until it’s over, and for the time being, Greinke is closer than he’s ever been. All eyes will be on his performance the next time he’s out there, because he still has a chance at an impossible record. It’s fair to wonder: how has Greinke gotten this far? How has he rattled off more than 43 consecutive scoreless innings? As best as I can tell, there are three general keys.

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Not to beat a dead horse, or any kind of horse, but the Matt Kemp trade has been lopsided. There’s still an awful long way to go, but for now the Matt Kemp trade is more like the Yasmani Grandal trade, and Grandal and the Dodgers couldn’t be happier. The other day on Twitter I was tipped off to an article about Grandal written by Matt Calkins. The headline: “Padres blew it with Yasmani Grandal.” It talks about Grandal’s limited playing time, and the lack of trust some Padres pitchers had in him. One paragraph stood out to me as particularly interesting:

Despite the general San Diego approach being to throw down and away, Grandal thought the power pitchers should be throwing inside in the early part of the count before using the outer half of the plate to record the out. But the veteran hurlers weren’t catching his drift, and as a result, he wasn’t catching their pitches.

Pitchers identified were Andrew Cashner, Tyson Ross, and Ian Kennedy. Last season, Grandal didn’t catch Cashner. Ross eventually stopped throwing to him, and Kennedy did too. They preferred working with Rene Rivera. This year, the Padres pitching staff has struggled. From the bottom of the same article:

San Diego’s pitching, however, has disappointed, and Grandal can’t help but wonder if that would be the case had his advice been heeded.

On the one hand, this doesn’t really matter. Grandal isn’t in San Diego anymore, so everyone just ought to move on. But on the other hand, this can be an interesting thing to investigate. So let’s talk about what Grandal talked about.

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It seems like a simple question to ask. Which recent home run was the least likely?

You could flippantly answer — the one Erick Aybar hit this year, or the one Melky Cabrera hit this year — and because they’ve got the lowest isolated slugging percentages with at least one homer hit, you would be right. But that doesn’t control for the quality of the pitcher. Aybar hit his off of Rick Porcello, who is having some issues with the home run right now.

A slightly more sophisticated approach might have you scan down the list of the worst isolated powers in the game right now, and then cross-reference those names with the pitchers that allowed those home runs. If you do that, you’ll eventually settle on Alexei Ramirez, who hit his first homer of the year off of Johnny Cueto earlier this year.

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Step one for Mike Bolsinger was throwing a unique curve.

Only eight players in 2014 had a smaller velocity difference between their fastball and curve, and his curve is two ticks faster than the average curve, which led me to highlight him in my JABO piece on what makes great curveballs. That piece helped alert the Dodgers’ front office to his viability as a starter. They acquired him and then turned to him when depth became an issue. That gave him an opportunity.

Step two for Mike Bolsinger was adding a third pitch, of course.

Most interesting about this new pitch for Bolsinger might be that it’s not very different from the other two pitches he throws. He threw a cutter and a curve and now he’s throwing a … slider. Everything breaks towards his glove, and everything averages between 80 and 88 mph. Watch him pitch, and you’ll think he’s throwing the same pitch over and over again. Actually, he might be.

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Do you like pornography? You don’t have to answer that. Just, here’s some pornography, only of the type that…well, you’re still not supposed to watch at work, but you could at least get away with watching it with your parents:

That’s Joc Pederson, either befriending Coors Field or trying to assault it. According to the ESPN Home Run Tracker, it’s the longest home run of the year, although there is that Coors-related asterisk. Also yesterday, Pederson hit a different mammoth dinger. The day before, he hit a different mammoth dinger. Among those with at least six homers, Pederson has the greatest average distance. Strong hitter. Good rookie.

These are indicators of strength. And there are some other familiar ones. For example, Pederson is tied for second in isolated power, behind only Bryce Harper. He’s barely a percentage point off the lead in home runs per fly ball. The comparisons to Adam Dunn are being made for a reason — lots of walks, lots of strikeouts, lots of power. We know that Pederson has pop. But how else might we be able to think about this? Enter Statcast. Glorious Statcast!

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Hitting and pitching may seem equally complicated, but consider this: when it comes to hitting, you have to use both of your hands in one place. By necessity, that adds a wrinkle, and can make hitting analysis difficult. In order to focus on something we can bite off and digest, let’s just ask Mike Trout, Bryce Harper, and Joc Pederson what they think about the top hand.

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It took a little while to get here, with an unexpected obstacle or two, but we’ve got a six-player trade between the Braves and the Dodgers. The youngest player involved is 26, the average age of the players is about 31, and this year they’ve all combined to be worth -1.2 WAR. Sounds to me like something worth examining in detail.

Going from Atlanta to Los Angeles:

• Alberto Callaspo
• Eric Stults
• Ian Thomas
• Juan Jaime

Going from Los Angeles to Atlanta:

• Juan Uribe
• Chris Withrow

It’s anything but a blockbuster. You could say a lot of these parts were expendable. Uribe lost playing time. Withrow’s still sidelined after surgery. Callaspo was likely to be designated for assignment. Jaime already had been designated for assignment, and cleared waivers. The Braves booted Stults from the starting rotation. Thomas has 16 big-league innings. Most likely, this isn’t a trade that’s going to make any meaningful difference, but if you look at it long enough, you can see components of certain interest. It’s kind of like a statistical Magic Eye puzzle, where the image revealed is very slightly more interesting than the immediate visual appearance of the puzzle itself. OK, good, I think I’m selling this well.

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