The Yankees bullpen is short on neither talent nor name value. Most baseball fans are aware of Aroldis Chapman, even if they’re not aware that he’s been in a funk. Likewise, many baseball fans are aware of Dellin Betances, and they’ve generally heard of David Robertson, who this year has re-emerged as terrific. To make the unit all the more deep, the Yankees acquired Tommy Kahnle, one of the year’s big bullpen breakout stories. Kahnle has struck out 38% of his opponents, ranking him seventh in baseball among regular or semi-regular relievers.

Kahnle, in the breakout sense, is a surprise. He finally has the results to go with the powerful stuff. And yet Kahnle may play second fiddle in here, because of another development. The highest strikeout rate for any reliever belongs to Craig Kimbrel. Well, sure. In second place, we find Kenley Jansen. Yes, of course. The name in third place reads “Chad Green.” And he’s up around 60 innings, so this isn’t just a hot week or month. Green has piled up the strikeouts, and as a consequence, he ranks seventh among all relievers in WAR. Chad Green made his season debut on May 9.

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Yesterday, the Diamondbacks throttled the best team in baseball, winning by 13 runs. Last Thursday, they beat the same team by seven runs. Wednesday, they beat them by two; Tuesday, they beat them by one. Before that series, the Diamondbacks swept the Giants, and took three of four from the Mets. Between the last two series against the Dodgers, the Diamondbacks swept the Rockies, and they did so on the road. In all, the Diamondbacks have won 11 in a row, and 13 of 14. A playoff position that was once in some doubt has now been effectively sealed.

It’s certainly true that the Diamondbacks aren’t this good. No team is this good, because no team has ever been this good, because no team could ever be this good. Every team looks perfect when it’s riding a winning streak, and winning streaks end. Heck, from June 28 until the start of this run, the Diamondbacks went 17-29. That’s bad! But that’s why you always need to look at the bigger picture. The Diamondbacks have baseball’s fifth-best winning percentage. They have baseball’s sixth-best BaseRuns estimated winning percentage. This team is good, and better than it was expected to be. Let’s think about that for a few minutes.

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There have been 23 perfect games in major-league history but only 18 four-homer games.

While we’d expect to see the quantity of the latter increase during a home-run spike like the one baseball is currently experiencing, the four-homer game remains one of the rarest individual, single-game achievements of which a player is capable. Perhaps the only rarer deeds are the 20-strikeout game (accomplished five times) and unassisted triple play (recorded 15 times in major-league history).

J.D. Martinez, as you’re probably aware, became the 18th player to produce a four-homer game this Monday. He became just the third one to reach the mark against four different pitchers.

Only six players have hit four homers in a game since the start of the 21st century. Mike Cameron (May 2, 2002), Shawn Green (May 23, 2002), Carlos Delgado (Sept. 25, 2003), Josh Hamilton (May 8, 2012), and Scooter Gennett (June 6 of this year) represent the other five. While Gennett is the unlikeliest player in the modern era to accomplish the feat, Martinez is also an unlikely candidate — if you account for the unusual path he’s taken to stardom.

More immediately, the four-homer game renders even more puzzling the lack of interest in Martinez’s services at the deadline — and, perhaps, helps his case en route to the free-agent market, hinting that this is a hitter who’s still improving.

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Last night, the Diamondbacks beat the Dodgers 13-0 to record their 11th consecutive victory. Now 80-58, Arizona has effectively wrapped a Wild Card berth, and given how they are playing, everyone else in the NL has to be hoping they lose that play-in game. Because they look formidable right now.

But as good as the Diamondbacks look, the Dodgers look equally bad. Last night’s drubbing was their fourth loss in a row and their ninth loss in their last 10 games. If it wasn’t for Clayton Kershaw returning to throw zeroes at the Padres on Friday night, in a game the Dodgers won just 1-0 over one of the worst teams in baseball, they’d be staring at a 10 game losing streak. And it’s not like they’re just playing well but losing close games due to some bad fortune. During this 10 game slide, the Dodgers have played like a team that deserved to get beat every night.

Since August 26th, the Dodgers 57 wRC+ is the worst in the Majors. They are hitting .201/.267/.320 thanks to a combination of the third-highest strikeout rate and the second-lowest ISO. Over this span of 10 games, their offense has been 20 runs worse than the average line-up.

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When Seattle selected JP Sears 333rd overall in this year’s draft, they knew they were getting a pitcher with a propensity for punch outs. In his junior season at The Citadel, the 21-year-old left-hander fanned 142 batters — the most in Division I baseball — in 95.1 innings. What they couldn’t possibly have known was that his strikeout rate would rise once he got to pro ball.

In 17 relief appearances between short-season Everett and Low-A Clinton, the 11th-round pick struck out — drum roll, please — a staggering 51 batters in 27.2 innings. He also allowed just 13 hits and two earned runs.

You can’t hit what you can’t see, and according to Clinton Lumber Kings pitching coach Doug Mathis, that’s the secret to the southpaw’s success.

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In the age of the shift, it takes a lot for a particular defensive alignment to merit real attention.

But over the weekend, the Diamondbacks managed to do just that, utilizing what appears to be the most dramatic shift in recent history — notable even more so because the park at which they did it, Coors Field, features one of the game’s largest outfields.

We’ve seen about every variety of infield shift over the last four years, but we’ve never witnessed anything quite like what the Diamondbacks employed against DJ LeMahieu.

That gets your attention. That is bold.

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A few weeks ago, colleague Jeff Sullivan wrote that Tommy Pham is the best player on the Cardinals. It’s hard to argue. With a month to go in what has been a breakout season, the 29-year-old outfielder is slashing .311/.407/.522, and he has 19 home runs in 431 plate appearances. He attributes his success to two things.

“Vision,” said Pham. “I got my contacts squared away this year, and that’s helped me improve tremendously. I’d say we could start there. The other thing is that I’ve put myself in a position to where I’m playing every day. In previous years I played for stretches, but then I’d sit on the bench. Last year I had an .870 OPS in the middle of August, then I basically became a designated pinch hitter. In 2015, I had an .824 OPS in my rookie season. I’ve always produced. It’s just that I’m playing every day now, so you get to see more.”

His production has never been better, and seeing the ball better is clearly helping.

“Just look at the numbers, man — I was striking out 38% last year,” stated Pham, who elaborated that depth perception was the issue. “Now I’m striking out 15% less. That means I’m putting more balls in play, which means I’m going to have better results.”

He’s well-versed in more than just probability. The Las Vegas native is a big believer in using any and all data to his advantage. Pham — an affirmed FanGraphs reader — studies his stat page to see which aspects of his game need improvement. If data shows that he’s a negative in a specific area, he strives to turn it into a positive. Read the rest of this entry »

There has been a changing of the guard in the American League as we have a new run differential leader: The Cleveland Indians (+155).

The Indians, thanks to an outstanding August, have jumped the Houston Astros (+153), the AL’s top club of the first half, and have possession of the game’s No. 2 run differential, trailing only the Los Angeles Dodgers (+209). The Indians completed a 19-9 record for August with a sweep of the Yankees on Wednesday, and posted a plus-58 run differential for the month. Read the rest of this entry »

Maybe you’ve noticed that Masahiro Tanaka is a little different these days. His recent good stretch has coincided with a trend we noticed a while back: he’s not really throwing the fastball any more. He’s not alone on the Yankees — it looks like it’s a team-wide phenomenon. But is it working for every Yankee?

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As FanGraphs managing editor Dave Cameron wrote Wednesday, we are seeing fewer “bewildering” transactions in baseball these days. Many teams are thinking in similar ways, hiring similar people, and using similar information to make decisions. While that makes for more efficient decision making, it also makes for fewer controversial and/or head-scratching decisions.

While relatively minor in scope, we were given an unusual transaction when the Pirates — who have fallen out of contention — elected to place Juan Nicasio on irrevocable outright waivers this week, not revocable waivers, which teams usually employ this time of year to pass players through waivers but are able to pull them back if claimed. Read the rest of this entry »