Nearly eight months ago, I asked you to predict the future. Here are the words I used to introduce that piece:

In 2017, the fastball rate fell again. It’s been falling for some time now, but in 2017 it fell again, from 56.7% in 2016 to 55.6% last year. There’s some reason to think that the drop in the fastball rate is linked to the increase in baseball’s increasing swinging-strike rate, which in turn is linked to the rise in strikeouts and hit batsmen, and on and on and on. Baseball is a complex system of action and reaction, and small changes can grow large quickly.

So this year, I want to know: what do you think will happen to some of baseball’s key stats, league-wide, in 2018? Maybe you think home-run rates will go up and strikeouts will fall. Maybe you think if home-run rates go up then strikeout rates have to fall. Maybe you think it’s the other way around. I don’t know. But I want to hear from you, and most of all I want to hear why you think certain changes are linked, and others aren’t.

Below are a series of tables featuring 10 years’ worth of data for a few key metrics. I’ve also included percentage changes year over year. Below each table is a poll which asks you to indicate whether you think a given statistic will increase or decrease — and, if so, by how much. Answer each poll, if you wish, and then also indicate in the comments why you voted the way you did on one statistic and not others. In a year or so, I’ll come back to this and we’ll talk about it as a group. Maybe it’ll be interesting. Maybe it won’t! We’ll see.

A lot has happened since I wrote those words: I’ve gotten married, my wife and I moved from Boston to Seattle, and I became a telecommuter (in my day job; this one has always been virtual-only). Oh, and the 2018 season came and went. The future I asked you to predict is now a part of the history books. Let’s see how good you were at reading ahead.

Note: a reader of the March post suggested he/she was unsure if answers should be submitted in percent or percentage point. It’s possible, as a result, that a few ballots could distort the overall results. Because I presented all the original deltas in the form of a percent, however, that is how I have once again presented them here. Fortunately, none of this matters at all!

Fastball Rate

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Usually these posts follow some kind of narrative structure. You wouldn’t necessarily say you come to FanGraphs for the storytelling, but any decent article is supposed to tell a story, even if it’s mostly statistical. I’m not going to bother this time. I’m not going to lead in with some manner of gripping anecdote. I just want to show you all a bunch of postseason numbers. I want to show them to you, because some of them are interesting, and postseason numbers aren’t always the easiest things to track down. Certainly not if you want to compare them to the same year’s regular-season numbers. That’s why I’m here today.

I’ve shown some of these plots in the past. What’s different now is that I have a few more plots, and also that the 2018 postseason is officially complete. Below, eight images, and limited commentary. How has playoff baseball compared to regular-season baseball over the years? I’ve gathered a whole host of statistical indicators, mostly with the help of Baseball Reference. Join me, if you will, on a quick analytical journey. We always guess at how the playoffs might play out, or which trends we might observe. We don’t have to guess about what’s already in the books.

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Ben Lindbergh and Jeff Sullivan banter about Boston’s outfield rotation during the World Series, the significance of declining World Series ratings, the Orioles and the difficulty of classifying “tanking” teams, Manny Machado’s public persona and whether his reputation will hurt his free-agent appeal, and the Mets’ hiring of agent Brodie Van Wagenen as their new GM. They also answer two listener emails about the Astros and do a Stat Blast about the differences between postseason and regular-season baseball.

Audio intro: Dinosaur Jr., "The Wagon"
Audio outro: Lou Reed, "Wagon Wheel"

Link to Craig Edwards on World Series TV ratings
Link to Jeff’s post on the Orioles
Link to Ben on quantifying hustle
Link to Sheryl Ring on hiring agents as GMs
Link to Jeff on postseason stats

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In the binary world of most baseball conversation, a party should be either (A) going big, or (B) going home. In baseball, the way this manifests is that fans frequently think a team should either go for it or blow it up. There are, of course, other options — a lot of other options, all somewhere in the middle — but people like dramatic action, especially right now, on the heels of the playoffs. And when you look at the Nationals, you can almost see one side of things. I’ve seen it asked whether the Nationals should take a step back. They’ve already taken a step back in the standings, and the Braves and Phillies might only get better, and Bryce Harper is probably a goner. How do you make up for probably losing Bryce Harper? Are the Nationals at the end of an era?

With or without Harper, the Nationals can contend. The idea of them blowing it up was always silly. Far too much talent remains, and on Wednesday, the club has made a notable addition. The Nationals signed a free agent. Not a new free agent, but rather, a preexisting free agent. Trevor Rosenthal spent the 2018 season rehabbing from Tommy John surgery. Now he’s the newest member of the Nationals’ bullpen. A bullpen they hope can lead them back to October.

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The Detroit Tigers have a rich history. The franchise has claimed 11 American League pennants and four World Series titles since being established in 1901. An “Olde English D” has emblazoned the jerseys and caps of numerous all-time greats.

The fan base is reliably loyal. The club is coming off a pair of 98-loss seasons, and there hasn’t been a championship to celebrate since 1984, but people in Detroit, and throughout the state of Michigan, continue to show their support. They love their Tigers.

In celebration of the iconic franchise, I asked a cross section of people within the game if they could share their thoughts — and perhaps a few anecdotes — on baseball in Detroit.

———

Michael Fulmer, Tigers pitcher: “With the new renovations and Little Caesars Arena, it’s cool to have all four major sports teams in a four-block radius. And I feel that Detroit is a diehard baseball city. Michigan as a whole. The fans are unbelievable. They’ll let you know when you’re doing good, and they’ll also let you know when you’re not doing so good. That’s OK. You can’t blame them for that. They want us to win, and we’re doing everything we can for them. But they are sticking with this team through thick and thin. They’re excited about the younger players. The feedback we’ve gotten, and the high energy we’ve gotten from this team, is cool to watch.

“Mr. Kaline and Alan Trammell bring a lot of history. Willie Horton. Those guys are around the clubhouse quite a bit, and it’s really cool to be able to talk those guys. They’re legends. I grew up hearing those names, so to be able meet them in person and talk baseball with them… it’s really cool.

“Jack Morris isn’t around as much as some of the other guys, but I have talked to him a few times. They’re obviously retiring his number this year, and last year I got to catch a first pitch he threw out. That was pretty cool, too.”

Dave Dombrowski, former Tigers GM: “It’s a great baseball city. It’s a historic franchise — Detroit is one of the original baseball cities — with a lot of great players in different eras. Detroit supports all sports, including baseball. The fans are very passionate. They love their Tigers.

“I remember when I first took the job. They weren’t drawing very well, but people who had known the city for a long time were telling me what a sleeping giant it was. That’s because of the love people had for the team. And that’s what it turned out to be.

“Unfortunately, we weren’t able to win a championship while I was there. We won everything short of that a couple of times. But again, the fans are very supportive. You see Tigers memorabilia items everywhere. They welcome the old-timers, the guys who were part of the franchise in the past.”

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At roughly the 10-minute mark of Dan Szymborski’s most recent appearance on FanGraphs Audio, that same guest proposes — partly in response to Game Three of the World Series and partly as an installment in the chronicles of the absurd — a rule change that, if adopted, could have some implications for how teams think of a coaching staff. Specifically, he suggests that, in those games where a team has exhausted its full complement of hitters — such as the Red Sox did during their 18-inning marathon against the Dodgers — that a manager should be allowed to take the field for his club. Although he doesn’t say it, the same could presumably be true on the pitching side, as well.

The sight of a manager actively involved in a game wouldn’t be unprecedented, of course. While utilized rarely over the past half-century — and not in any real way since Pete Rose served in that capacity for the Reds from 1984 through 1986 — player-manager was a pretty common job title in the earliest days of the game.

Recent seasons have provided managerial surrogates, of course. During the final years of his career, Jason Giambi played the part of friendly uncle just as much as he did pinch-hitter. One could say the same for Julio Franco and Matt Stairs and Jim Thome. Chase Utley was referred to as “dad” by teammates for the bulk of the 2018 season. Bartolo Colon is older than a number of actual managers.

While some players have persevered into their early 40s, Rose’s performance reveals why there’s probably little demand for a player-manager proper in the current version of the game. By his third year on Cincinnati’s roster, the 45-year-old Rose was able neither to hit nor run nor field at a major-league level. Those are, one notes, basically all the ways in which a ballplayer can create wins for his team. Nor does this even account for all the ways the manager’s role has evolved in 30 years. With the volume of data made available by front offices, coaches of all sorts have had to develop skills that would be foreign to many of their predecessors.

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