Joined: Wed Sep 24, 2008 12:16 pm Posts: 81625
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Boilermaker Rick wrote: rogers park bryan wrote: The number of pitches for one thing makes it very unlikely. Why dont you find me a guy who struck out 12 and got lit up. I doubt its happened in modern times, but if it has, ill admit I was wrong. The point is that you said prior that all that matters is strikeouts and home runs. I never said that. Its not 100% (You like to apply that places where its doesnt belong.) First of all you left out Walks. And secondly, its not a perfect science, but those three outcomes are more controllable by the pitcher than others. There is a certain amount of chance with any ball put in play. Here is the well hit average stat Though it has been 11 years since Voros McCracken first introduced it to the sabermetric community, BABIP is a concept that, apparently, even the most experienced baseball minds might not fully grasp.
If that's a term that's either completely foreign or somewhat new to you -- or even if you're familiar but not quite certain that you've mastered its use -- then this column is for you. Being the beginning of fantasy baseball draft season, what better time for a primer: Understanding BABIP.
Let's address the obvious question first: What, precisely, is BABIP?
BABIP, or batting average on balls in play, was originally designed to measure a pitcher's ability to prevent hits on balls in play. Today it's widely used to evaluate both pitchers and hitters, and it's a calculation of a hitter's batting average -- or pitcher's batting average allowed -- on batted balls put into the field of play. That means walks and strikeouts don't count; those aren't batted balls. Nor do home runs; those don't land within the field of play.
The formula: Hits minus home runs, divided by at-bats minus home runs minus strikeouts plus sacrifice flies (H - HR)/(AB - HR - K + SF).
What purpose does BABIP serve?
Fantasy owners familiar with the concept will quickly answer that it's a way to determine a hitter or pitcher's luck. That's true, as variances in a player's BABIP from the major league average could represent a certain degree of luck, either good or bad. But the common mistake many owners make is to assume that BABIP is the authority on luck in the game of baseball, and that the farther that a player's number was from that aforementioned major league average, the more or less lucky he had to have been.
That's simply not true.
Before we get to the reason, let's address another important question: Exactly what is the major league average for BABIP?
It varies from season to season, but in 2009, the major league average BABIP was .299. Generally speaking, it's about .300. It can, however, range by as many as five points (occasionally more) in either direction from that.
So, then, why can't it be assumed that a hitter with a .360 BABIP was extraordinarily lucky, while one with a .240 BABIP was especially unlucky, and in the case of a pitcher, that the opposite is true?
Making such an assumption also presumes that every baseball player is identical; that there is no such thing as a strikeout artist or command specialist, ground-ball or fly-ball pitcher, contact or power hitter. There are so many different types of baseball players nowadays, and every type of play has a varying degree of success.
An excellent way of putting it: Joel Pineiro had a .295 BABIP in 2009 and Andy Pettitte had a .297 BABIP, but does that necessarily mean that Pineiro was any luckier than Pettitte? No -- Pineiro generated ground balls on a higher percentage of balls in play than any pitcher in the game (59.0 percent) and line drives at the fourth-lowest rate (15.9 percent). Since a ground ball has a much greater chance of being converted into an out than a line drive, and a fly ball greater than a ground ball, Pineiro's BABIP should have been beneath the major league average. Pettitte, by comparison, allowed the 12th-highest line-drive rate (21.3 percent) and served up ground balls 41.7 percent of the time. His BABIP, actually, might have been a bit driven by good fortune.
It's also not only what type of hitter or pitcher a player is that factors into BABIP. What are some other things that have an impact?
Speed (applies to hitters): Naturally, the quicker the runner, the more likely he'll leg out infield grounders for hits, thereby helping his BABIP. Of the 25 players to amass at least 25 infield hits in 2009, only two had a BABIP beneath the major league average: Kazuo Matsui (28 infield hits, .285 BABIP) and Willy Taveras (28, .277). In addition, of the 14 players to attempt steals on at least 20 percent of their opportunities (data per Baseball-Reference.com), only one had a BABIP beneath the MLB average: Josh Anderson (25.6 percent steals rate, .280 BABIP).
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Quality of contact (applies to both): The better wood a hitter gets on the ball, the more likely he's going to "hit 'em where they ain't," as Wee Willie Keeler once said. A high line-drive rate is one way to ensure a high BABIP, and to that end, of the 17 players who hit line drives on at least 22.5 percent of all balls in play, only Josh Willingham (.289) had a BABIP beneath the major league average. In fact, the other 16 all had BABIPs greater than .325. But here's another interesting fact: Inside Edge provides a statistic called "Well Hit Average," which measures the percentage of at-bats in which a hitter made solid contact. Of the top 25 hitters in that stat who also qualified for the batting title, 18 managed better-than-average BABIPs.
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