Complete xBA and xBABIP Data Now Available!

At the request of some of our readers, we’ve finally posted all of our xBA and xBABIP data from the 2009, 2010 and 2011 seasons. You can access the data by clicking the link on the navigation bar at the top of the page, or you can just click here: xBA/xBABIP by Year. In case you’re not familiar with xBA or xBABIP, they’re stats we’ve developed here at Baseball Professor. They’re calculated using over a dozen peripheral stats for each player including batted ball, speed and plate discipline data. Because one equation is used to illustrate the true performance of various types of hitters ranging from speed-first players (Michael Bourn) to pure sluggers (Adam Dunn), there are some players who tend to post actual batting averages or BABIPs that are consistently higher or lower than their xBAs or xBABIPs, but we see this phenomenon in all stats designed with the same purpose of shedding light on a player’s actual performance (think Matt Cain and his ab...