Using xBABIP and IF/F to predict some Sox’s 2009 numbers
A month ago, Chris Dutton and Peter Bendix collaborated together to come up with a new statistic -- xBABIP. For batters, a .300 BABIP is not a reliable benchline (as it is for pitchers), nor is there one standard benchline across all batters. They have to be personalized, which Dutton and Bendix did.
David Ortiz looks to be in line for a monster regression to the mean... except in this case, regression is a good thing. You can expect a .300 average as a reasonable forecast next year for Big Papi.
Check out the numbers behind the reasoning for Big Papi, plus some interesting numbers on Jason Bay, Julio Lugo and others...