Imagine the average Yasiel Puig plate appearance. What does it look like to you? One thing it might look like is Puig flailing at a bunch of low-away sliders. Now, I don’t actually know what’s in your head. I don’t know how you think about Puig. But just in case you think he is extremely vulnerable to breaking stuff, do I have news for you!

I have prepared two plots, showing the entirety of Puig’s major-league career. Here is a rolling-average plot of Puig’s rate of fastballs seen:

Great! He’s gone through some low-fastball phases before. Now he’s higher than ever. I should tell you that, for context, baseball-wide fastball rates are going *down*. So, the average hitter is seeing fewer fastballs than ever before. Puig is seeing more fastballs than ever before. All right, that’s part of it. Time to fold in run values. Here’s the same idea, where I’ve just summed up Puig’s fastball run values above or below average over rolling 30-game stretches.

It shouldn’t surprise you to see how cyclical things are. Underneath, that’s how baseball tends to work — something gets the job done until it doesn’t, at which point adjustments are made, and then more adjustments are made, and on and on. Puig has gone through troughs, followed by peaks, but Puig has been at another low. How low? So far, there are 208 hitters this season who have batted at least 100 times. Puig owns baseball’s highest fastball rate, at 68%. Last year, he was at 60%. And while this has been going on, Puig is sitting on baseball’s third-worst fastball run value, at -8.9 runs. Only Dansby Swanson and Alcides Escobar have been worse. Pitch-type run values, of course, are prone to noise in either direction, but both these factors are fairly convincing together. Puig’s seeing more fastballs because he’s doing less to them.

Here are Puig’s fastball run values by season, expressed as runs above or below average per 100 fastballs:

• 2013: +1.7 runs per 100 fastballs
• 2014: +1.4
• 2015: +1.0
• 2016: -0.5
• 2017: -2.4

So far this season, Puig has been pretty good against both sliders and changeups. It’s almost as if he’s focused too hard on addressing a weakness, such that now he’s just behind faster pitches. It’s something to work on, and with Puig, it’s just another adjustment to attempt. There’s always something, but I guess you could say that’s true for anybody.

It could be misstating things to assert that Puig’s on a high-fastball diet. Pitchers, certainly, are giving him a steady diet of fastballs. Yet relatively few of them are being consumed. So, the headline could probably stand to be fixed. Give me a few seconds to get on that.

Daily notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Chuckie Robinson, C, Houston (Profile)
Level: Low-A   Age: 22   Org Rank: HM   Top 100: NR
Line: 1-for-2, HR, 2 BB

Notes
A 21st rounder out of Southern Miss, Robinson has big pull power and takes full-effort, uppercut swings. He’s homered in two consecutive games (his first two of the season) and is now up to .282/.346/.479 on the year. He’s significantly improved his conditioning since high school and improved his defensive mobility, though he’s still listed at 5-foot-11, 225 pounds. Robinson is now a passable receiver with above-average pure arm strength that plays down on throws to second base because he’s still a bit slow to exit his crouch. Some are apprehensive about the sustainability of Robinson’s Bunyanesque approach to hitting, but he’s got louder tools and a better chance to reach the majors than the typical 21st-round pick. He profiles as a third catcher.

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Let’s do some quick review! One stat we have on our pages shows up as IFFB%. This measures the rate of infield pop-ups per fly ball hit. You know this measure — this is the one where Joey Votto is a freak.

Another stat we have on our pages shows up as HR/FB. This measures the rate of home runs per fly ball hit. You also know this measure — this is the one where Aaron Judge is a freak. (And, seemingly, everybody else.)

Both of these numbers make sense to look at for individuals, and for teams. Let’s think about teams. In fact, let’s think about one specific team, that being the Milwaukee Brewers. This season, the Brewers have hit pop-ups on 6.2% of their fly balls. That’s the lowest rate for any team. Also, this season, the Brewers have hit home runs on 20.6% of their fly balls. That’s the highest rate for any team. The Brewers currently rank as the best by each measure. That means they rank No. 1.

We have this batted-ball data going back to 2002, which gives us 15 full individual seasons, and one partial one. Combining everything, here is a table of the 10 best offensive teams by average rank in these two stats.

In short, the Brewers are trying to be the first team in a decade and a half or so to be better than anyone else in terms of pop-ups and homers. The 2004 Yankees came tantalizingly close to dual No. 1s, but they were narrowly edged out in pop-ups by the Tigers. I’m sure the Yankees didn’t mind, and it’s not like this is the end goal of the whole Brewers organization, but this is, overall, a positive reflection of the lineup through to this point. Although they’ve swung and missed, this is how you make the most of fly balls.

As it happens, these Brewers are actually tied with the 2015 Giants for what would be the lowest pop-up rate in the whole window. And no team has previously reached even 17% home runs per fly ball; the Brewers are close to 21%. So, technically, they rank No. 1 in each category this season, and they also rank No. 1 in each category over all 15+ seasons. This is a remarkable partial achievement!

In closing, this year’s team with the worst average rank is the Red Sox, who are 27th by pop-ups and 29th by homers. No team has ever finished last in both categories. The closest was the 2014 Royals, who were worst in homers and second-worst in pop-ups. The 2014 Royals lost the World Series in seven games. Don’t accuse me of overselling.

Daily notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Greg Harris, RHP, Tampa (Profile)
Level: Double-A   Age: 22   Org Rank: 29   Top 100: NR
Line: 6 IP, 1 BB, 4 H, 2 ER, 11 K

Notes
After seeing Harris last fall, I projected him to the bullpen due to loose command. Other than one bad start on May 4 at Biloxi, however — when he walked four batters — he’s generally avoided issuing free passes, walking just six in 36 innings. Harris throws hard, in the low-to-mid 90s, has an above-average changeup, a viable cutter, and curveball. If he can maintain his upright, stiff-looking delivery and fill the zone, he could pitch in the back of a rotation. He has a 3.26 ERA at Double-A Montgomery.

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