In his Major League debut for the Mets, 23-year-old Zack Wheeler struck out seven hitters in his six innings of work. Of those seven strikeouts, six came on fastballs — and of those six, four came on whiffs induced by fastballs.

This got me wondering, what pitchers this year have generated the largest percentage of their strikeouts off of their fastball? And how many generated those strike outs on swings and misses on fastballs*?

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At this point, everyone knows the story of the Cardinals stealing Albert Pujols in the 13th round of the 1999 draft. In terms of production for the cost, it’s probably the best draft pick in Major League history. Well, apparently, the Cardinals are good at this whole 13th round draft pick thing, because exactly 10 years after they unearthed Pujols, they struck gold again.

Their 2009 13th round pick? Matt Carpenter. He was a senior sign out of Texas Christian University, a budget pick who only cost them a $1,000 signing bonus. After signing, the Cardinals had him split time between short-season and two A-ball levels. At low-A, he drew some walks but showed no power — in part because he hit flat footed with no weight transfer — and was terrible when he got promoted to high-A, hitting .219/.286/.342 in 128 plate appearances. 23-year-old non-athletes who can’t hit A-ball pitching a few months after signing for $1,000 are the definition of non-prospects.

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Welcome to the second edition of The Fortnight. Read here for our initial post, and here for the explanation of our depth charts and standings pages, which fuel The Fortnight in its utmost.

This week, I thought we’d take a look at the teams whose projected full-season run differential has changed the most since we last left off. Stats for this edition run from May 21 through the games on June 2.

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The Detroit Tigers starters currently have a 2.54 FIP, which translates into a FIP- of 62, easily the best in baseball. In fact, it’s easily the best FIP- in baseball history, and as I wrote a month ago, Detroit’s starters have a chance to write themselves into the history books with their 2013 performance. But, instead of just writing a post updating their pace — they’d basically need to post a FIP- of 83 the rest of the way to break the record for best FIP relative to league average — I thought it might be interesting to look at how the best rotations in baseball history dominated.

For instance, the narrative around the Tigers current rotation mostly has to do with their strikeouts. They are on pace to shatter the all time record for strikeouts by a rotation, and the swing-and-miss stuff possessed by guys like Justin Verlander and Max Scherzer makes it easy to credit the strikeout rate as the primary driver of their success. However, once you compare the individual components to the league average, their strikeout rate becomes just a part of the story, and maybe not even the biggest part.

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You can knock ’em down, but you can’t knock ’em out.

The St. Louis Cardinals’ pitching staff has been decimated by injuries early on in 2013, but the club continues to receive strong performances from rookie pitchers thanks to one of the deepest minor league systems in the game. The next pitching prospect to throw his hat into the ring will be 2012 first round draft pick Michael Wacha, who will face the Kansas City Royals in his big league debut tonight.

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Mariano Rivera is the best relief pitcher of all time, and his 20 year run of greatness has mostly been fueled by throwing one pitch. The dominance of Rivera’s cut fastball has been well documented, and you likely know that when the Yankees have the lead in the 9th inning, opponents are going to see cutter after cutter after cutter.

But, now, over in St. Louis, Rivera has an odd imitator of sorts. No, the Cardinals closer is not a cutter specialist; he doesn’t even throw one. Instead, Edward Mujica — the team’s emergency fill-in closer with Jason Motte on the shelf — is closing out games using an endless supply of change-ups.

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In Sports Illustrated’s 2013 baseball preview, Tom Verducci wrote a great profile of the Tampa Bay Rays and their approach to optimizing the performance of their pitching staff.

One topic that was especially interesting to me was the apparent importance the Rays place on the 1-1 count. Verducci recounts how pitching coach Jim Hickey described the organization’s focus on getting opposing batters into 1-2 counts:

The Rays believe no pitch changes the course of that at bat more than the 1-and-1 delivery. “It’s almost a 200-point swing in on-base percentage with one ball and two strikes as opposed to two balls and one strike,” Hickey told the pitchers.

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Through five starts, St. Louis Cardinals pitcher Adam Wainwright has a 1.93 ERA, 1.09 FIP, and 2.13 SIERA. Of the 144 batsmen to face Wainwright, 37 struck out and just 1 walked — Bryce Harper in the 6th inning of last Tuesday’s game. Wainwright has induced a career-high 55.8% groundball-rate; he has held opponents to 8 earned runs, 9 runs total, scattered across 37 and 1/3 innings.

Wainwright is not “on fire.” He is fire. Butane lighters hang pictures of him on their bedroom walls. Local volunteer firemen warn children about Wainwright during school visits.

So how does an excellent pitcher produce results like a deity pitcher? For Wainwright, the tactic appears to be: (a) Throw a full spectrum of fastballs, (b) select from that fastball spectrum at an increasingly unpredictable rhythm, and (c) pitch against the right teams.
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The hard-throwing, 24-year-old Matt Harvey has quickly become a must watch when he toes the rubber for the Mets. Called up in late July of last year, Harvey and his blistering fastball (94.6 average velocity) currently sport a 31.3% strikeout rate and an ERA- of 25 — no, not 75, 25. In 2013, Harvey has made four starts, lasting at least seven innings in each appearance. He has only allowed one home run and a paltry 10 hits in 29 innings.

Harvey does feature a number of pitches, but he’s heavily reliant on his four-seam fastball, throwing that pitch 60% of the time. That ranks him fifth among all qualified pitchers in 2013. And that fastball has been deadly.

According to the PITCHf/x leader boards at Baseball Prospectus (powered by Brooks Baseball), Harvey has induced a .042 ISO (2nd best) and a .167 BA (3rd best) against when using his fastball. David Golebiewski from Baseball Analytics recently wrote about Harvey’s ability to win with the high fastball. The numbers were eye-popping. Harvey so far this year has induced whiffs on high fastballs 48.4% of the time, and he’s throwing upstairs over 50% of the time.

I was curious how this compared to others this year and in previous years. So I did some digging.

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Chris Getz hit his first home run in 1,144 plate appearances against Atlanta last night. It was rather overshadowed when the Braves smacked three home runs off of Kelvin Herrera in the eighth inning as if they had a whole lineup full of Chris Getzes. Getz does not have much power, but he does make up for it with other skills. Yeah, right. Getz is off to a pretty hot start (for him, certainly) this year, but he is a pretty terrible hitter. Over 1351 career plate appearances, he has a .258/.314/.323 (.286 wOBA) line. His utter lack of power is only part of the problem.

There have been hitters who have excelled without much power, of course. Even before Getz’s shot off of Kris Medlen, I had been thinking about looking at hitters who managed big numbers without much power. Baseball fans like benchmarks: 500 home runs, .300 batting average, 100 runs batted in, 20 wins. Some of them may be more telling regarding a player’s actual value than others, but we understandably like those standard numbers. So I decided to look at .400 hitters — well, .400 wOBA hitters. I think of a .400 on-base percentage as an “awesomeness benchmark,” and since wOBA is scaled on on-base percentage, it works well enough.

For the sake of historical curiosity, here are some of the .400 wOBA seasons with the fewest home runs.

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