In just a few hours, Luis Severino is going to throw the first pitch of the American League wild-card game. Some relatively short amount of time after that, Liam Hendriks will take the mound. Severino is one of the better starting pitchers in either league. Hendriks is a reliever who, in the middle of this very season, was designated for assignment. As far as the first inning goes, it’s…not an equal matchup. Or it doesn’t feel like one, at least. Of course, there’s more to it than that.

As Jay Jaffe has already written today, the Yankees are using a starter, while the A’s are planning on bullpenning. Hendriks has gotten used to being an opener, but this is going to be a little different, because he won’t be followed by a “bulk guy.” It’s likely to be Oakland relievers all the way down. This is the concept someone always advocates every year around this time, for a winner-take-all, one-game playoff. It’s no way to manage a pitching staff every day of every week of every month. The A’s don’t have to worry about that tonight. All that matters is what’s right before them.

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In a very short amount of time, the 2018 MLB playoffs will commence. Some number of hours after that, we will have already observed our first advance and our first elimination. The Cubs and Rockies played for half of their lives on Monday; tonight, one will be spared, and one will be finished off. Even though it was weird to have a couple of tiebreakers, they functioned as an effective warm-up for the postseason. Yesterday, the stakes were moderate. Beginning today, the stakes are high.

So, with the playoff field set: Who looks like the best playoff team in the bunch? Who looks like the biggest underdog? This is a post I try to get up each year. Here’s last year’s edition. I thought it would be weird to publish this after someone had already been knocked out, so I’m coming in today just under the wire. It’s time to look at what the numbers can tell us.

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Monday, I wrote about why, if I had a vote, I’d select Jacob deGrom for National League MVP. I do not have a vote, though, and I doubt that my argument is sufficiently convincing. The NL MVP is almost certainly going to end up being Christian Yelich. There was a somewhat crowded field for a little while, but Yelich pulled away from his fellow position players with an impossible final month. From the start of September, Yelich batted .370, with 16 strikeouts and 18 extra-base hits. Yelich was the best overall player from start to finish on a Brewers team that won the division literally yesterday. For what the MVP has turned into, Yelich is the obvious choice. Tremendous player on a team that wouldn’t have gotten to where it did without him.

Truth be told, it also wasn’t just the last month. Yelich was baseball’s best hitter in the second half, and it wasn’t even close. After the All-Star break, he registered a wRC+ of 220. Baseball Reference doesn’t keep track of wRC+, but it does keep track of OPS+ and its splits do go back further than ours, and according to the numbers at Baseball Reference, Yelich had one of the ten or so best second halves in the last 50 years. The only players with better second-half rate stats over enough of a sample: Barry Bonds, Mike Schmidt, Hank Aaron, and Jim Thome. Bonds actually has the four best second halves, and they all happened in a row between 2001-2004, but this isn’t a Barry Bonds fun-fact article. This is a Christian Yelich fun-fact article. He did his best to carry the Brewers into the NLDS.

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Before we get going, allow me to say four things:

1. This is not the official FanGraphs position. FanGraphs doesn’t have an official position on any awards. This is a company of a bunch of different writers, and any bunch of writers will possess a bunch of different opinions. These are my thoughts, and my thoughts alone.
2. My vote this year is for the AL Cy Young. I do not have a vote for the NL MVP. If I did have a vote for the NL MVP, I wouldn’t be allowed to write this right now! As far as this race is concerned, I’m an outside observer.
3. Reasonable people can conclude that Jacob deGrom shouldn’t be the NL MVP. In such an event, I imagine the support would go to Christian Yelich. Yelich has been amazing, especially of late. Every number has error bars, and Yelich has an argument. This case isn’t open and shut.
4. You’ve probably read much of my argument before, written by different people in different places. This is the “best player” argument. It’s the Mike Trout argument. I’m just going to make the argument with different words.

So we can get into it, then. Last week, I wasn’t sure who I supported. I’ve never voted for the league MVP, so I’ve never given it all that much thought. But now I’ve come around, and I can say that, if I had a vote for the NL MVP, my first-place choice would be Jacob deGrom. My second-place choice would be Christian Yelich. deGrom, of course, is done for the year, because the Mets were bad. Yelich’s Brewers are playing literally right now, and for all I know, he’ll provide the winning hit that sends the Brewers straight to the NLDS. For so many voters, that’s likely to be a factor. Perhaps that’s likely to be the factor. I don’t believe that it should be. I believe that deGrom made a winning case.

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The last pitcher to strike out Willians Astudillo was Tyler Olson. With two on and one out in the top of the eighth of a one-run game, Olson put Astudillo away with the sixth pitch of the at-bat, a well-thrown low-away changeup. Astudillo had also struck out ten plate appearances earlier, facing Blake Snell. Snell was the first guy in the majors to get Astudillo to go down on strikes. Olson was the second. There have been only the two strikeouts. Olson’s happened on August 29.

Astudillo appeared again on September 1. He started on September 2. So far in September, Astudillo has come to the plate 55 times, and he hasn’t struck out. He is the only major-leaguer without a strikeout this month, among everyone with at least 50 opportunities. And though Astudillo has also drawn just one September walk, he’s batted .389. Overall, in a small sample in the bigs, he’s batted .350. Ordinarily we don’t cite batting average very often around these parts, but with Astudillo, it can tell most of the story. The weirdest player from the minors is making it work.

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The Cubs are just ever so barely hanging onto a division lead over the Brewers. For this, there could be any number of factors to blame. The Brewers, obviously, are half responsible, having played tremendously well after adding their best two players over the offseason. And on the Cubs’ side, what if Yu Darvish hadn’t gotten hurt? What if Brandon Morrow hadn’t gotten hurt? What if Kris Bryant hadn’t gotten hurt? What if Tyler Chatwood hadn’t underachieved? The division lead currently stands at half of one game. It wouldn’t have taken very much more to give the current Cubs a greater amount of breathing room.

Just glancing around, you wouldn’t think to fault Kyle Schwarber for anything. Schwarber’s been an above-average hitter and a three-win player, regularly playing an acceptable corner outfield. And before I proceed, I want to make one thing clear: Overall, the Cubs should be happy with where Schwarber is. They should be pleased with his overall health and development, and it seems as if his career is moving forward. But as you know, in a tight division race, almost anything could make a significant difference. And so we need to talk about Kyle Schwarber’s timing. I saw something in his splits I can’t in good conscience ignore. You know that I love a good fun fact.

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Between 2016 and 2017, the worst hitter in the major leagues was Adalberto Mondesi. Yes, Mondesi was young. Yes, this requires you set a plate-appearance minimum of 200. Yes, it’s tight, and within a certain margin of error. But over the two years, Mondesi posted a big-league wRC+ of 29. Luke Maile wound up at 30. Adam Engel wound up at 38. Whenever you examine the extremes of any leaderboard, it’s important to understand that luck almost always plays some kind of role, but Mondesi was responsible for the very worst results. He didn’t make it any easier for the team to move on from Alcides Escobar.

Now, chances are, for many of you, you haven’t paid attention to the Royals for a while. By and large, they’ve been a terrible baseball team in a terrible baseball division. And easily the weirdest thing happening right now for the Royals is Ryan O’Hearn, who’s sitting on a 167 wRC+ after having slugged just .391 in Triple-A. O’Hearn is deserving of his own examination, but as the Royals have drifted ever further from any relevance, Adalberto Mondesi has stepped it up. Used to be, he was a good prospect with bad results. These days, he’s putting it together, with a power and speed package the Royals hope to build around when they’re once again ready to compete.

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Blake Snell has turned into one of the very best pitchers in baseball, and in order to understand how and why, we can start by just looking at the most recent batter he faced. A couple days ago, in the bottom of the seventh, Snell struck out Rowdy Tellez. The first pitch was a slider for a ball, at 88 miles per hour. The second pitch was another slider for a ball, at 89. The third pitch was a slider for a foul, at 87. Then came a fastball for a ball, at 96. Then a curveball for a whiff, at 82. Then a curveball for a foul, at 81. Finally, a fastball for a called strike, at 98. Tellez was gone, and Snell was replaced by Chaz Roe, having thrown exactly 100 pitches.

It’s not that Snell is only just beginning to emerge. His turnaround began in the middle of last year, and he hasn’t looked back. It’s last season that now looks more like a breakout. This season, however, Snell is a contender for the AL Cy Young award, even despite a DL stint that threatened to derail his progress. And while Snell was strong in the first half, before his bout of shoulder fatigue, he’s come back nearly unhittable. Between halves, he’s chopped more than a run off his ERA. He’s chopped a run and a half off his FIP, and he’s done basically the same with his xFIP. He’s added ten points to his strikeout rate while trimming his walks. Blake Snell is like a dominant closer who throws for six innings.

In one way, it’s not hard to see where Snell has improved. Yet his most recent changes are far more subtle. And they might well be the last changes he has to make for a long time. All that’s left for Blake Snell is to stay healthy.

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Officially, the Braves have sewn up the NL East, after having completed a four-game weekend sweep of the Phillies. The division was already more or less decided, but an unlikely Phillies sweep could’ve at least brought it down to the wire. Instead, the Phillies will play out the string, while the Braves get themselves set for the playoffs. On the one hand, the Phillies can’t be too disappointed — they would’ve been arriving a year or so ahead of time. On the other hand, the Braves arrived a year or so ahead of time. And this is a plot of the 2018 Phillies’ playoff odds:

As recently as August 7, the Phillies were in first place and 15 games over .500. Since then, they’ve gone an NL-worst 14-28, while the Braves have gone 27-19. Very obviously, when a team collapses, several components have to be involved. One thing I’ll highlight, though: dating back to August 8, according to Baseball Savant, Phillies pitchers have ranked seventh in baseball in expected wOBA allowed, while Braves pitchers have ranked 16th. And yet, Phillies pitchers have ranked 26th in baseball in actual wOBA allowed, while Braves pitchers have ranked third. Call it noise if you want. I’m certain that’s a part of it. The other part is defense. The Phillies’ team defense has let them down, and as the headline suggests, they’re on the verge of establishing a new record.

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