Last night, Greg Bird played the hero, launching a home run off Andrew Miller for the only run of the game. For a lefty, just getting on base against Miller is a success, but going deep is pretty remarkable; it was only the second home run a left-hander hit off Miller this year.

But perhaps we shouldn’t be too surprised, because since coming back off the disabled list, Bird has been hitting bombs with regularity. His overall season line of .190/.288/.422 isn’t much to write home about, but his early-season numbers came when he probably shouldn’t have been playing, given his foot issues. If we combine his post-DL with his postseason performance to date, this is the line that Healthy Greg Bird has put up in 2017.

The underlying numbers show significant improvement as well. In his pre-DL performance, Bird averaged 87.7 mph exit velocity on his batted balls, but since returning, that mark has jumped to 91.1 mph. For reference, only 13 hitters with at least 100 batted balls averaged 91 mph in exit velocity this year.

And in the postseason, against one of the best pitching staffs we’ve ever seen, Bird’s been crushing the ball at a level not unlike his most monstrous teammate. Here are Bird’s batted balls in this series against Cleveland so far.

Bird’s six batted balls in this series have averaged 94.4 mph, while facing the best left-handed reliever in baseball twice, a top-5 starter twice, and two above average right-handers.

As a pull-heavy left-hander who also strikes out and hits his share of infield flies, Bird is probably never going to be a high average hitter, but the power he’s shown since coming off the DL is a carrying tool, and Bird is showing why the Yankees line-up is scarier right now than their overall season numbers might make it appear.

I don’t know if this is ultimately going to matter much. As I write this, the Yankees are still leading the Indians by a run, and they only need to get six more outs. The odds are in the Yankees’ favor. But, not long ago, the odds were even more in the Yankees’ favor. Then we had controversy. Controversy! Our first controversy of the 2017 postseason, as far as I can tell. The scene: the bottom of the sixth, with two on and two out in an 8-3 game. It’s Chad Green, and it’s Lonnie Chisenhall, and the count is 0-and-2.

That’s not where that pitch was supposed to go. The result: the dreaded 0-and-2 HBP. You’d expect better of Green, and he certainly knew right away he didn’t execute like he wanted to, but if you watch that clip over and over, you might notice something. As the umpire signals for Chisenhall to take his base, Chisenhall appears to be surprised. Not that he was going to turn down the opportunity, but he didn’t respond like someone who’d been hit by a pitch in the body. Gary Sanchez immediately thought that something was wrong. Sanchez thought the ball hit the knob of the bat. Upon super-slow-motion instant replay, it looks like the ball did hit the knob of the bat.

And then the ball went into Sanchez’s glove! Which would make it, technically, a foul tip, which would lead to a strikeout. If the ball hit the bat, then Chisenhall should’ve been out, and that would’ve been the end of it. I’m not saying the instant replay makes it 100% incontestable, but it looks a lot more like bat than hand. And as you probably know, these plays are reviewable. Seems like that should’ve come in handy for the Yankees. They could get the umpires to take a look. They…didn’t. I have no idea why. Something tells me it’s going to come up later on. Sanchez thought Chisenhall was hit in the bat, not the hand, and he gestured toward his own dugout. No review was requested. Within seconds, this would loom awfully large.

Instead of 8-3 in the seventh, it became 8-7 in the sixth. Instead of the Indians’ win expectancy being about 3%, it was about 33%. Now, that’s not all on the call. Even after Chisenhall went to first, the Indians’ odds of winning stood at about 8%, and then Francisco Lindor had to do what he did to Chad Green’s delivery. Green, for his part, should’ve made better pitches. But in our sixth playoff game, we have our first real issue related to a call on the field — and instant replay — and now that I check back in, oh, look at that, the Indians have tied the game up. I’m sure Joe Girardi is looking forward to his presser. I can’t imagine what he’s going to be asked.

Yesterday, I wrote about how Jon Gray’s curveball didn’t work in the NL Wild Card game. Gray hung a bunch of poorly-located curves that the Diamondbacks crushed, and he was chased from the game in the second inning. Last night, though, Trevor Bauer showed what a good curveball in the postseason looks like.

With only four whiffs, you might not think the pitch was particularly dominant, but Bauer’s curveball was his best pitch of the night. Because, unlike Gray, he was able to keep it down.

Instead of just relying on whiffs, Bauer also managed to freeze hitters with curves in the zone, like he did to Aaron Judge here.

Eight times, Bauer froze a Yankee hitter with a curveball in the zone, including Aaron Judge twice for strike three. And when the Yankees did swing, it didn’t go much better for them.

15 times, a New York hitter went after Bauer’s curveball. Only seven of those 15 swings resulted in a ball in play. Here is what they did with those seven balls in play.

Hicks rocked a poorly located curve, but besides that, this is as weak as contact gets. With Sanchez’s double play, he still managed to rack up seven outs on the seven balls in play. Combined with the four strikeouts, Bauer got a total of 11 outs out of his 35 curveballs. Not bad indeed.

Bauer’s curve has always been his best pitch, and it’s probably not a coincidence that he’s had his best season while throwing his pitch more frequently than ever before. Bauer threw his curve 30% of the time in the regular season, and upped that to 36% last night. He’s not quite Rich Hill yet, but given what Bauer did to the Yankees with his breaking ball last night, they probably should expect a healthy dose of them if he gets into another game this series.

Of course, with Corey Kluber going today and Carlos Carrasco in Game Three, the Yankees might not see Bauer again this season.

Necessity is said to be mother of all invention. It continues to be the impetus for creativity and movement away from tradition in Major League Baseball.

Jeff and I participated in the first postseason chat, a four-hour and three-minute affair Tuesday night that had moments of comedy, drama, soberness — and which featured 2,300 questions from a wonderfully engaged and spirited FanGraphs audience.

The subject of bullpen-ing came up early in the game. This isn’t surprising: it’s been a story of some interest heading into this postseason. I, for example, recently proposed that the Yankees ought to bullpen the Wild Card game. The Yankees, of course, have a dominant bullpen, the first major-league relief corps to feature five arms to have recorded strikeout rates of 30% or better. Aroldis Chapman looks like he’s back, hitting 103 mph, and he’s supported by Dellin Betances, Chad Green, Tommy Kahnle, and David Robertson.

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Zack Granite is newly 25 years old, and less newly a rookie. Though he was drafted by and plays for the Twins, he was born on Staten Island and always rooted for the Yankees. He has a dog named Jeter. He grew up with the flourishing Yankees dynasty, and for some time it was all he’d ever known. I’m not sure, but it stands to reason that a younger Granite had an imagination. And I’m not sure, but it stands to reason that a younger Granite imagined one day helping the Yankees to win in the playoffs.

You could call it a cruel twist that, in Granite’s playoff debut, the Yankees should occupy the other dugout. Not that Granite was even supposed to play, but shortly after the beginning, Byron Buxton’s back started to hurt. Granite entered as the replacement, and he even reached on a sixth-inning single. In the eighth, he nearly reached again. With one out and none on, Granite’s speed might’ve opened the door just a crack. Granite would’ve stood on first base, after Tommy Kahnle couldn’t handle a flip. But Granite didn’t touch the bag. It was all more of a fly-by.

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Aroldis Chapman is in the first year of the largest contract ever before awarded to a reliever. Chapman earned that contract for having proven himself as perhaps the most overwhelming one-inning pitcher in the modern history of the sport. Other relievers have been great, sure, but Chapman was something extraordinary. Extraordinary, that is, until a strange thing happened. Around the middle of the summer, Chapman was bad.

Perhaps he was bad only by his own standards. He was still throwing his fastball a hundred miles per hour. But Chapman struggled enough to lose his job as the Yankees’ closer. Over one stretch covering a month and a half, Chapman allowed a mediocre .724 OPS, with a strikeout-to-walk ratio well under 2. The arm strength was there, but the results were not, and, that fast, Chapman started to feel unreliable. Aroldis Chapman, of all people. He lost his air of invulnerability.

Since September began, Chapman has made 12 appearances. He’s generated two walks and 20 strikeouts, allowing a .250 OPS. Chapman took over Tuesday’s wild-card game after the outcome felt like a foregone conclusion, but he didn’t allow the Twins to open the door. He struck out Robbie Grossman swinging. He struck out Brian Dozier swinging. Joe Mauer managed to fight off a full-count delivery for a ground-ball single the other way, but then Chapman struck out Jorge Polanco swinging. It felt so perfectly normal.

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As expected, the Yankees beat the Twins in the AL Wild Card game last night. Unexpectedly, they won by asking four relievers to get 26 outs after Luis Severino couldn’t get out of the first inning. And in that victory, it was essentially impossible to not notice the difference in power between the two clubs.

Aaron Judge is the game’s most powerful player, so New York always has some kind of lead when it comes to raw strength, but this team isn’t defined just by their hulking right fielder. This Yankees team is built around power everywhere.

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Tonight, the postseason kicks off with the Yankees hosting the Twins in the AL Wild Card game. And there may not be another game this year where one team is as strongly favored to win as New York is today. Our Game Odds have the Yankees as 67/33 favorites, FiveThirtyEight has it 63/37 for the Yankees, and depending on the sports book you’re looking at, the Yankees might be as high as 70% favorites to win tonight.

It’s not too hard to see why the odds are so slanted in New York’s favor. For one, they’re pretty clearly the better team. Their 91-71 record might only be six games better than Minnesota’s, but their BaseRuns expected record of 102-60 was actually the second-best in baseball, and 21 wins better than the Twins 81-81 expected record.

And the advantage is only amplified by eliminating the depth pieces in a winner-take-all affair. Luis Severino (2.98 ERA/3.07 FIP/3.04 xFIP) is a significantly better pitcher than Ervin Santana (3.28 ERA/4.46 FIP/4.77 xFIP), and the gap will only grow once the bullpens get involved; the Yankees had the game’s best bullpen this year, while the Twins checked in at #22. With Chad Green, David Robertson, Tommy Kahnle, and Dellin Betances all around to bridge the gap to Aroldis Chapman, the Yankees can afford to get Severino out of the game at almost any point, rather than let him bury them with early struggles. The Twins, though, don’t have enough good arms to get through six or seven shutdown innings if Santana gets in trouble in the first few innings.

Toss in that the Twins won’t have their best hitter, Miguel Sano, even as a pinch-hitter, and well, the Yankees should be heavily favored tonight, especially given that they also have home field advantage. The fact that the Yankees have dominated the Twins over the last decade is irrelevant, but it’s still correct to think New York is in a significantly better position to win tonight than Minnesota is.

But this is baseball, and at the risk of relying on cliché, any team can beat any other team in a single-game matchup. The Twins might be underdogs, but they’re about as likely to win tonight as Jose Altuve is to get a base hit in any given at-bat, and no one is surprised when that happens. So, let’s look at how the Twins might have to do in order to pull off the upset.

These Twins aren’t the slap-hitters of years past; this team surged to the playoffs on the backs of a strong offense led by a bunch of guys hitting homers. And while Severino didn’t have a home run problem this year, it was his primary undoing the last two years, so it’s not impossible for the Twins to take him deep a couple of times before the bullpen arms can get warm. Hoping to string a bunch of singles together to put together a rally not only has a lower chance of success, but the time it takes to start that kind of rally also gives Joe Girardi a chance to get one of his army of relievers warm, so the Twins best chance to put up runs tonight is to score quickly. And that means home runs.

So forget everything you hear about bunting, small ball, and playing for one run tonight. The Twins need to put up five or six runs to have a real good chance to win tonight, and they’re probably not going to little-ball their way to that kind of total. The Twins’ best chance to win tonight is to hammer a couple of mistakes and hope that they can get some kinds on base before putting the ball in the seats.

While Santana was the team’s best starter this year, Berrios might be their x-factor tonight. On a staff full of pitch-to-contact types — they ranked 29th in K% — he’s the one guy who has legitimate swing-and-miss stuff. He didn’t blow hitters away as a starter, but given a few innings in a winner-take-all situation, his stuff might play up a few ticks, and if he’s sitting 95 and throwing his wipeout curveball, it’s not that hard to imagine him going all Andrew Miller on the Yankees for a few innings.

Using Berrios in relief tonight will put the Twins at a big disadvantage in the ALDS, given that they’d have burned their top two starters just to try and get there, but they don’t have any better options. If Santana has to hand the ball to Taylor Rogers or Tyler Duffey, things probably won’t go that well for the Twins. If they can go Santana and Berrios for the first seven innings, then hand the ball to Trevor Hildenberger and Matt Belisle, then they might be able to hold the Yankees to just a few runs. The Twins should be aggressive in trying to avoid a middle reliever fight, because that’s the one they are least equipped to win.

Gary Sanchez has one of the best arms in baseball, but he struggles to keep the ball in front of him on pitches that bounce; no catcher in baseball allowed more than the 69 wild pitches and passed balls he allowed this year. He also led the league in catcher throwing errors, so while his arm is very strong, it’s not always particularly accurate.

The Twins probably won’t get a lot of baserunners against New York, so they need to convert a high percentage of them the ones they do get into runs. So if they get guys on first base, and there is a pitch in the dirt, don’t be afraid to go. If they can steal a run or two through aggressive exploitation of Sanchez’s biggest weakness, then maybe they can also steal a game in which they are decided underdogs.

The first of two Wild Card games is scheduled for tonight. In addition to must-win baseball, this time of year is also typically marked by the appearance of a Dave Cameron piece on the merits of “bullpen-ing” a game — that is, the practice of using nothing but relievers in a single contest, of attempting to exploit matchups in order to maximize the chances of winning.

While the logic of “bullpen-ing” is sound in theory, it also fails to account for the comfort of pitchers who’ve potentially become attached to their roles. To get a better idea of how they might adapt to such an approach and how it might be handled in practice, I asked some actual players about it. Turns out, there’s a particular type of reliever who’s best suited to take the ball in the first few innings of a win-or-go-home game. And a particular type of pitcher who should follow him.

The first thing revealed by my inquiries is that relievers love the idea. “I’m down for whatever,” said Giants reliever Hunter Strickland with a smile. Nationals closer Sean Doolittle just laughed for a while. “Would I get paid like a starting pitcher?” he finally asked after the laughter had subsided.

Relievers would be fine with it because they’re accustomed to answering the call whenever. “We’re used to throwing in whatever inning, [if] not usually the first,” said Strickland. Added Miami’s Brad Ziegler: “I don’t think it would be very different for me, as much as it would be for the starter coming into the game [in the later innings]. His whole routine would have to change.”

And a starter probably would have to throw a couple innings in such a game — in order to reach a full complement of nine and still leave some arms for extras, that is. So the question is probably which kind of starter would adapt effectively to an otherwise unusual arrangement.

The answer? Probably a young one. Older starters are more married to their routines. “It’s very hard for me personally,” said Brandon McCarthy regarding the idea of starting a game in any other inning but the first. “My routine as a starter is fixed to the minute and a lot of guys are like that. It’s certainly not something impossible to deal with but could make a team nervous.”

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The Yankees could do something really interesting in the Wild Card game — and perhaps even really smart.

If ever there were a team ideally suited to bullpen a Wild Card play-in game, it’s this Yankees team. Yankees relievers have combined to post the highest collective strikeout rate of all time among bullpens. The club has five individual relievers who have struck out better than 30% of batters faced: Chad Green (41.9%), Dellin Betances (38.7%), David Robertson (38.4%), Aroldis Chapman (32.3%) and Tommy Kahnle (31.9%). All five also have K-BB% marks of 21 points or better and FIPs of 3.20 or lower. Chasen Shreve represents another high-strikeout arm and a second left-handed option.

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