Every season we see a player who walks a bit more or hits for more power or strikes out more. That in itself is never enough to make roster changes on since regression is always the way to go when projecting forward.
This is why things like pitch f/x and spray charts, etc. have made such a big change in the way we can project new approaches or major changes. Today I posted an article at RotoHardBall.com that attempts to find how Jose Tabata has increased his walk rate in 2011 to a level twice of that he produced in his first season and higher than any minor league season as well.
You'll see how I did it over there, but I feel confident he has worked on some things and so far they have payed off. He probably will not maintain the 13 percent walk rate, but I don't doubt it will continue to be higher than last years rate going forward.
