Jon Roegele is the leading authority on strike-zone changes, and I recommend you read his midseason update of the strike zone that was published at The Hardball Times yesterday.

There are a number of interesting findings and developments in the piece, but the headline is that the strike zone is contracting for a second consecutive season after it shrunk for the first time in the PITCHf/x era last season.

In 2015, the strike zone measured 475 square inches, according to Roegele, and 50 square inches in the area 21 inches above the ground and down (i.e. the bottom of the zone and below). It declined to 474 and 45 inches, respectively, last season, and to 464 and 43 square inches to date this season.

A smaller strike zone likely has played some role in the run-scoring surge of the last 48 months, and a smaller strike zone figures to have all sorts of consequences.

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It’s that time of year again. Time to gather around adult beverages (drink specials to be determined) and small plates (free thanks to FanGraphs, October, and The Athletic!) and talk baseball with some of your favorite writers. Thursday, July 13th, at 7pm at Local Option in Chicago, we have invited the writers, analysts, and brewers below (and a few more off list) to come and be merry with you in the back of the bar.

This is a 21-and-over event. No tickets required.

See you soon.

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I’ve noticed a recurring question in most of my chats. For the past several weeks, a similar query has shown up time and again, and that query is, to paraphrase: “where do the Brewers actually have to be in order to be a deadline buyer?” And I’ve mostly ignored the query, or brushed it aside, because while in one sense it was a worthwhile question, I didn’t think it was going to matter. I assumed the Brewers would fade away. I imagine nearly all of us assumed the Brewers would fade away. No reason for them to change the course of their rebuild.

I can tell you this: there’s still time. Still time for the Brewers to collapse, or regress, or do whatever might be your preferred word for the action. Still time for the Brewers to stop being good. But on Thursday, the Brewers went into Chicago and they throttled the Cubs so badly that Jon Jay was asked to handle the ninth. Importantly, the Brewers added to their lead in the division. No less importantly, the Brewers closed in on the second wild-card slot. The Brewers have played more than half of their games, and they’ve won more than half of the games that they’ve played. The Brewers have indeed positioned themselves to buy.

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Give this to the Brewers — as much as everyone still expects them to fade, they haven’t faded yet. They’ve played at least .500 baseball in April, May, and June, and they’ve held at least a share of first place in the National League Central for more than a month. Sure, the Cubs remain the favorites. Sure, the Cubs are the more talented ballclub. But the Brewers have effectively cut the season in half, which does wonders for both the odds and morale. The first-half Brewers have been a great story.

A team doesn’t overachieve without players doing the same, and we’ve dedicated posts to several of Milwaukee’s pleasant surprises. We spent the whole first month writing about Eric Thames, and we’ve also addressed Jimmy Nelson, Corey Knebel, and so on. There’s another player I’ve been intending to write about, too. The Brewers rank eighth in baseball in starting-rotation WAR, and Nelson’s the leader of the group. And yet he is only barely holding off Chase Anderson.

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Last Monday, I wrote this:

If you went to bed on the eve of the season and woke up today, you’d think everything was in order in the American League Central.

At that time, the Cleveland Baseball Club had compiled a 2.5-game lead on the Minnesota Twins. Cleveland had won six in a row and seven of their last 10, while Minnesota had lost four straight, and lost seven of their past 10. The preseason narrative looked to be crystallizing. Unfortunately, Minnesota wasn’t much interested in that narrative. The Twins proceeded to run off five wins in six ballgames, including three on the road in Cleveland, to take back control of the division.

Down south, the Brewers salvaged their week with a 7-0 win in their series finale with the Atlanta Baseball Club. Zach Davies pitched a very odd game, in which he tossed seven shutout innings, allowing just five baserunners (four hits and a walk) and didn’t strike anyone out. It was just the fifth time such a game had been pitched in the 2000s, the sixth time in the Wild Card Era, and the 129th time in baseball history.

The Brewers have been pretty disruptive to the main narrative, as well. When the Chicago Cubs won the 2016 World Series, Dave wrote a piece entitled “This Is How Dynasties Begin.” I nodded along, as it seemed, on that night, that the Cubs would be a force with which to reckon for some time to come. Today, I still believe that, but there have been cracks in the facade, certainly. Since May 17, the Brewers have been in sole possession of first place for every day save four — they spent two days 0.5 games back and two days tied for first place. They’ve had a tenuous grasp on the lead, as they haven’t pulled more than 2.5 games ahead, but they’ve been in first place nonetheless.

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Here’s an advertisement I saw while reading an article earlier this morning:

I know how internet advertising works. I know it doesn’t matter that I saw that ad while reading an article that had nothing to do with sports. The internet knows I spend a lot of time on baseball websites. Hence, a baseball ad. But the specific ad itself doesn’t know that I’ve been interested in Eric Thames. That ad was prepped with Thames in the middle of it. It wasn’t prepped before the start of the season — it wouldn’t have made sense to feature Thames, or really any Brewer. This ad is a reflection of how well Thames started the year. It’s a reflection of how quickly he achieved broad recognition. Eric Thames was selected to help promote MLB.tv. Not Mike Trout. Not Bryce Harper. Eric Thames.

Thames’ start was absolutely incredible. He hit the ground sprinting, and I’m sure you remember all the coverage he was given. He was, and still is, a heck of a story. The Brewers are still happy to have him. But it’s worth pointing out that Thames hasn’t been the same. For whatever reason, he’s slipped into a slump.

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In addition to calling up stud center-field prospect Lewis Brinson, Milwaukee also recently summoned talented lefty and KATOH crush Josh Hader. Although Hader’s worked primarily as starter in the minors, the Brewers plan to use him out of the bullpen for the time being. A 19th-round pick out of high school, Hader’s been exceeding expectations for years. He owns a 3.87 FIP and 27% strikeout rate in 541 minor-league innings. In 25 starts between Double-A and Triple-A last year, he pitched to a sparkling 3.07 FIP with a 31% strikeout rate.

Things didn’t go as swimmingly for Hader in Triple-A this year, however. He maintained a solid 22% strikeout rate, but matched it with a 14% walk rate and coughed up an uncharacteristic 14 homers in 52 innings. The end result was a 5.37 ERA and 4.93 xFIP, which doesn’t exactly scream “big-league ready.”

Still, KATOH remains optimistic. My system projects Hader for 5.0 WAR over his first six seasons by the traditional method and 5.7 WAR by KATOH+, which incorporates scouting rankings. That makes him one of the top 10 pitching prospects in the minors, and a mid-top-100 guy overall.

To put some faces to Hader’s statistical profile, let’s generate some statistical comps for the 6-foot-3 lefty. I calculated a weighted Mahalanobis distance between Hader’s Double-A and Triple-A performance and every season since 1991. In the table below, you’ll find the 10 most similar seasons, ranked from most to least similar. The WAR totals refer to each player’s first six seasons in the major leagues. A lower “Mah Dist” reading indicates a closer comp.

Please note that the Mahalanobis analysis is separate from KATOH. KATOH relies on macro-level trends, rather than comps. The fates of a few statistically similar players shouldn’t be used to draw sweeping conclusions about a prospect’s future. For this reason, I recommend using a player’s KATOH forecast to assess his future potential. The comps give us some interesting names that sometimes feel spot-on, but they’re mostly just there for fun.

Despite his relative lack of prospect pedigree, Hader’s stuff is almost certainly of big-league quality. The lefty’s fastball averaged over 94 mph in his debut, and both his slider and changeup project to plus according to Eric Longenhagen. However, scouts have long contended that Hader profiles best as a reliever. To wit:

• Eric Longenhagen, 2017: “Those who consider him a reliever cite the rarity of a delivery like this in starting rotations across baseball, the potential platoon issues Hader might face as a low-slot lefty, and his fringey control.”
• Baseball America Prospect Handbook, 2016: “His reliance on his outstanding fastball combined with just ordinary control make him a possible bullpen candidate.”
• Baseball America Prospect Handbook, 2015: “Durability will always be a question because of Hader’s size and how he slings the ball across his body… His reliance on his fastball profiles him better as a reliever.”
• Baseball America Prospect Handbook, 2014: “It’s one of the most unconventional deliveries a starter could use… Scouts see him as a future lefty reliever where his low arm angle will make life difficult for lefthanders.”

Despite the persistent “future reliever” label, Hader dominated for years as a starter in the minors. But when he finally sputtered in Triple-A, the Brewers seemingly decided to try him in the pen. Given his stuff and minor-league performance, I have little doubt that he’ll be a dominant force there.

Three months ago, few would have predicted the Brewers would be atop the National League Central in June, but here we are. The Cardinals, Cubs, and Pirates have all fallen short of preseason expectations, while Milwaukee has surprisingly kept their record above .500. Regardless of what the standings say, Milwaukee’s roster pales in comparison to the Cubs’ and Cardinals’ on paper, which is why we give the Brewers a mere 3% chance of winning the division.

Milwaukee’s team just got a bit better, however, as they’ve called up top prospect Lewis Brinson to play some outfield. Brinson was having a fine season in Triple-A, slashing .312/.397/.503. He’s hit very well for a center fielder — and exceptionally well for a good defensive center fielder who’s only 23.

Brinson’s come a long way since his early days as a professional, especially in the strikeout department. He struck out an alarming 38% of the time in Low-A back in 2013, but has hacked several percentage points off that mark since. His 22% strikeout rate in Triple-A this year is still a bit high, but not alarmingly so. He’s made this improvement without giving up much in other categories, either. His 20 extra-base hits, seven steals, healthy walk rate, and center-field defense more than outweigh the remaining strikeout risk.

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There’s not a soul out there that thought the 2017 Brewers would be as good as the 2017 Cubs. There’s not a soul out there that thinks the 2017 Brewers will be as good as the 2017 Cubs. And yet, the 2017 Brewers have been as good as the 2017 Cubs, at least by wins and losses, which are ultimately the only numbers that matter. The Cubs have three more wins than defeats. The Brewers can say the same of themselves. The Cubs have been billed as an active dynasty. The Brewers have been rebuilding. I’ll be damned. We’ll all be damned.

One key to understanding what’s going on: Before the start of the season, we ran our annual positional power rankings, and the Brewers rotation slotted in at 25th place. By actual WAR to this point, that same Brewers rotation ranks in seventh place. A certain amount of credit ought to go to Chase Anderson, who’s exceeding expectations. But he’s not exceeding them quite as much as Jimmy Nelson. In Nelson, it looks like the Brewers might have an ace.

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Corbin Burnes is carving up hitters. Recently promoted to Milwaukee’s Double-A affiliate, the Biloxi Shuckers, the 22-year-old right-hander boasts a 0.99 ERA, and he’s allowed just 37 hits in 63-and-two-thirds innings. The bulk of that dominance has come with the high-A Carolina Mudcats, with whom he spent the months of April and May.

Drafted by the Brewers last June out of St. Mary’s (California) College, Burnes is looking every bit a steal as a fourth-round selection. Plus stuff is a big reason, as is a take-no-prisoners attitude. Unlike a lot of young pitchers, Burnes doesn’t shy away from the power-pitcher label.

“I definitely consider myself a power pitcher,” Burnes told me before making what is thus far his lone Double-A start (which was truncated by weather). “I’ve got a power fastball and a pretty hard slider. The goal for us is to get a guy out in three pitches or less, but I’m not trying to feed the middle of the plate and let them hit it. For the most part, I’m out there trying to miss bats.”

He’s been missing a fair number of them. In 99.1 professional innings, the confident right-hander has punched out 101 batters. And when he has induced contact, he hasn’t been burdened by barrels. Burnes’s batting-average against as a pro is a flyweight .178.

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