Not So Random Rizzo Facts

In case you don’t follow every last thing I put out on my twitter feed you may have missed these strange factoids. Anthony Rizzo was traded from San Diego to Chicago for Andrew Cashner. Rizzo’s last Major League game was against the Cubs (0-3 with a walk) at Petco Park. In his final at bat, […]

Keeping Nova’s fastball down

Against the division rival Rays, Ivan Nova spun an excellent game, going eight-plus innings, allowing just four hits (including none from the second batter of the game until the eighth inning) and one run while walking one, hitting one, and striking out five. He also got 12 balls on the ground out of 22 hit […]

Halladay’s pitch mix

Buster Olney had this to say about Roy Halladay‘s pitch mix: The percentage of Roy Halladay pitches that were fastballs in ’11: 27. Pct. of Halladay pitches that were fastballs in ’12: 8. — Buster Olney (@Buster_ESPN) May 28, 2012 I have no idea what he’s talking about. First and foremost, Doc doesn’t throw four-seam […]

A splitter from Buchholz

During Wednesday’s start against the Rays, Clay Buchholz began toying around with a new pitch in his arsenal: a splitter. Buchholz used it on an 0-2 pitch against the left-handed hitting Elliot Johnson, leading off the fifth inning. Below is the spin chart from Buchholz’s most recent start, with his typical offerings—four-seam fastball: brown, two-seam […]

More sliders, more success for Logan

The recent injuries to Mariano Rivera and David Robertson have caused something of a stir at the back end of the Yankees bullpen. Rafael Soriano, once the nominal “seventh-inning guy,” has taken hold of the closer’s role, meaning that the Yankees have needed to piece together their setup duties. Fortunately for New York, they have […]

Strange Lowe

Derek Lowe tossed a shutout on May 15, 2012. Mark it down. Three points of significance: It was Lowe’s first shutout since 2005 and the fourth of his career He didn’t strike out a single batter He shelved his slider and cutter for the night There’s a connection between Lowe’s pitch mix and whiff rate. […]

A short story about two sinkers

Jason Hammel picked-up (and/or emphasized) a two-seam sinker this year for the Orioles. Across the continent, Brandon McCarthy—as we all know—likes sinkers, too. While Hammel’s has flown under the radar, it shouldn’t for much longer. And perhaps McCarthy should look into the SI cover effect. In 2012, there are 54 pitchers with 110 or more […]

Shark attack

Shark Spellcheck F7 Jeffrey Alan Samardzija Starting pitcher Call him what you want, but Jeff Samardzija‘s impressive spring training carried over into the regular season. In just his sixth big league start, and first since the end of 2010, the former Notre Dame wide receiver was one Starlin Castro throwing error away from a complete […]

Umpire statistics

We (Harry and I) have released PITCHf/x based statistics for every umpire that has called a PITCHf/x enabled game, provided that they called enough pitches to accurately represent their called strikezone. We sincerely appreciate you taking the time to read this post before using our umpiring data. Being an umpire is hard. It might be […]

Things are trending up

About a year ago, sometime during John Lackey’s precipitous decline into worthlessness, I started paying attention to an odd phenomenon in which he would lose velocity during games: Here, we can see a clear slope in fastballs thrown over the course of the game. It’s as if there’s some direct, measurable relationship between how many […]

Similarity Scores: a very beta feature

Last night during the heart-stopping Syracuse-Wisconsin game, Harry and I were talking (okay, Harry was mostly watching his team win by the skin of its teeth) about ways to improve the Brooks Baseball player card system. We exchanged some data and are presenting the first of our “data-driven” search tools—pitcher similarity. This feature is incredibly […]

Danny Duffy PITCHf/x

Here’s something new. Jeffrey Gross from THT Fantasy and I are exchanging “watch this guy” ideas—fantasy picks from one side and PITCHf/x based picks on the other. First up is Jeff’s first breakout candidate for a cheap but valuable pitcher—Kansas City’s Danny Duffy. The PITCHf/x data we’re discussing can be seen on Duffy’s player card […]

Darvish will make pitch classification fun

Your definition of fun may vary. But Yu Darvish and his eight-pitch mix are going to make life interesting for catchers, hitters and even PITCHf/x analysts. Here’s a picture from his Cactus League debut. The pitch in red was a strike three splitter to end an inning. The axes show movement during the flight to […]

Z-Scores and Pitch IQ Scores

I thought it important to describe a new feature we’ve added to the PitchFX Player Cards over the last month or so. I’ve previously tweeted (@Brooksbaseball) about these features but haven’t described them in detail. When the cards first debuted, we were asked by a number of people to provide average data for comparison, especially […]

McCarthy declassified

Pitch classification is not an exact science. It requires a lot of review and rechecks over time to ensure no funny IDs have snuck in and that a pitcher’s arsenel is accurately reflected. That last point can be the most difficult, especially if a pitcher changes things over time. And then there are changes in […]

A.J.‘s curve: missing bats, missing the zone

After much anticipation, the trade that sent A.J. Burnett from the Yankees to the Pirates was finally completed on Sunday. Burnett had a tumultuous three seasons in the Bronx, with a 4.79 ERA and 4.5 walks/hit batters per nine over 584 regular-season innings. His signature pitch is an 83 mph spike-curveball with exceptional movement. (Harry […]

None nastier than Kimbrel

Craig Kimbrel throws a nasty breaking ball. He grips it like a spike slider (maybe) and the ball moves like a curveball (sort of). It’s a relatively short curveball, but one moving upwards of 87 mph when it leaves Kimbrel’s hand. The combination of speed and drop are unparalleled in the major leagues today. Checkout […]

Yes, we actually classified every pitch

Long term PITCHf/x data has always been difficult to find online. There are several existing sources available: Fangraphs has some of it, but not everything you might want (I’m sure they will tomorrow, just for that). Texas Leaguer has had a fantastic tool up for quite some time now, but still, there are places it […]